First version of disovery toolchain
This commit is contained in:
t-moe
50
example/src/main.c
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50
example/src/main.c
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@@ -0,0 +1,50 @@
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#include "stm32f4_discovery.h"
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#include <stdbool.h>
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int main(void) {
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int state=0;
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bool oldButtonState;
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bool newButtonState;
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STM_EVAL_LEDInit(LED3);
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STM_EVAL_LEDInit(LED4);
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STM_EVAL_LEDInit(LED5);
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STM_EVAL_LEDInit(LED6);
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STM_EVAL_PBInit(BUTTON_USER,BUTTON_MODE_GPIO);
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STM_EVAL_LEDOff(LED3);
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STM_EVAL_LEDOff(LED4);
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STM_EVAL_LEDOff(LED5);
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STM_EVAL_LEDOff(LED6);
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while(1) {
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newButtonState=STM_EVAL_PBGetState(BUTTON_USER);
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if((newButtonState^oldButtonState) && newButtonState) {
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state++;
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state%=4;
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}
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oldButtonState=newButtonState;
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switch(state) {
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case 0:
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STM_EVAL_LEDOff(LED6);
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STM_EVAL_LEDOn(LED3);
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break;
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case 1:
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STM_EVAL_LEDOff(LED3);
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STM_EVAL_LEDOn(LED4);
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break;
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case 2:
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STM_EVAL_LEDOff(LED4);
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STM_EVAL_LEDOn(LED5);
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break;
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case 3:
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STM_EVAL_LEDOff(LED5);
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STM_EVAL_LEDOn(LED6);
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break;
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}
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}
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}
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512
example/src/startup.s
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512
example/src/startup.s
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@@ -0,0 +1,512 @@
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/**
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******************************************************************************
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* @file startup_stm32f4xx.s
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* @author MCD Application Team
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* @version V1.0.0
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* @date 30-September-2011
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* @brief STM32F4xx Devices vector table for Atollic TrueSTUDIO toolchain.
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* This module performs:
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* - Set the initial SP
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* - Set the initial PC == Reset_Handler,
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* - Set the vector table entries with the exceptions ISR address
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* - Configure the clock system and the external SRAM mounted on
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* STM324xG-EVAL board to be used as data memory (optional,
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* to be enabled by user)
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* - Branches to main in the C library (which eventually
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* calls main()).
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* After Reset the Cortex-M4 processor is in Thread mode,
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* priority is Privileged, and the Stack is set to Main.
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******************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*
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* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
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******************************************************************************
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*/
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.syntax unified
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.cpu cortex-m4
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.fpu softvfp
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.thumb
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.global g_pfnVectors
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.global Default_Handler
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/* start address for the initialization values of the .data section.
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defined in linker script */
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.word _sidata
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/* start address for the .data section. defined in linker script */
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.word _sdata
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/* end address for the .data section. defined in linker script */
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.word _edata
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/* start address for the .bss section. defined in linker script */
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.word _sbss
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/* end address for the .bss section. defined in linker script */
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.word _ebss
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/* stack used for SystemInit_ExtMemCtl; always internal RAM used */
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/**
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* @brief This is the code that gets called when the processor first
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* starts execution following a reset event. Only the absolutely
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* necessary set is performed, after which the application
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* supplied main() routine is called.
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* @param None
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* @retval : None
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*/
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.section .text.Reset_Handler
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.weak Reset_Handler
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.type Reset_Handler, %function
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Reset_Handler:
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/* Copy the data segment initializers from flash to SRAM */
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movs r1, #0
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b LoopCopyDataInit
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CopyDataInit:
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ldr r3, =_sidata
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ldr r3, [r3, r1]
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str r3, [r0, r1]
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adds r1, r1, #4
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LoopCopyDataInit:
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ldr r0, =_sdata
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ldr r3, =_edata
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adds r2, r0, r1
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cmp r2, r3
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bcc CopyDataInit
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ldr r2, =_sbss
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b LoopFillZerobss
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/* Zero fill the bss segment. */
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FillZerobss:
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movs r3, #0
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str r3, [r2], #4
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LoopFillZerobss:
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ldr r3, = _ebss
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cmp r2, r3
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bcc FillZerobss
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/* Call the clock system intitialization function.*/
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bl SystemInit
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/* Call static constructors */
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bl __libc_init_array
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/* Call the application's entry point.*/
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bl main
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bx lr
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.size Reset_Handler, .-Reset_Handler
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/**
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* @brief This is the code that gets called when the processor receives an
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* unexpected interrupt. This simply enters an infinite loop, preserving
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* the system state for examination by a debugger.
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* @param None
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* @retval None
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*/
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.section .text.Default_Handler,"ax",%progbits
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Default_Handler:
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Infinite_Loop:
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b Infinite_Loop
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.size Default_Handler, .-Default_Handler
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/******************************************************************************
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*
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* The minimal vector table for a Cortex M3. Note that the proper constructs
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* must be placed on this to ensure that it ends up at physical address
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* 0x0000.0000.
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*
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*******************************************************************************/
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.section .isr_vector,"a",%progbits
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.type g_pfnVectors, %object
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.size g_pfnVectors, .-g_pfnVectors
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g_pfnVectors:
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.word _estack
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.word Reset_Handler
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.word NMI_Handler
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.word HardFault_Handler
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.word MemManage_Handler
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.word BusFault_Handler
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.word UsageFault_Handler
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.word 0
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.word 0
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.word 0
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.word 0
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.word SVC_Handler
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.word DebugMon_Handler
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.word 0
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.word PendSV_Handler
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.word SysTick_Handler
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/* External Interrupts */
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.word WWDG_IRQHandler /* Window WatchDog */
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.word PVD_IRQHandler /* PVD through EXTI Line detection */
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.word TAMP_STAMP_IRQHandler /* Tamper and TimeStamps through the EXTI line */
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.word RTC_WKUP_IRQHandler /* RTC Wakeup through the EXTI line */
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.word FLASH_IRQHandler /* FLASH */
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.word RCC_IRQHandler /* RCC */
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.word EXTI0_IRQHandler /* EXTI Line0 */
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.word EXTI1_IRQHandler /* EXTI Line1 */
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.word EXTI2_IRQHandler /* EXTI Line2 */
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.word EXTI3_IRQHandler /* EXTI Line3 */
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.word EXTI4_IRQHandler /* EXTI Line4 */
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.word DMA1_Stream0_IRQHandler /* DMA1 Stream 0 */
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.word DMA1_Stream1_IRQHandler /* DMA1 Stream 1 */
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.word DMA1_Stream2_IRQHandler /* DMA1 Stream 2 */
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.word DMA1_Stream3_IRQHandler /* DMA1 Stream 3 */
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.word DMA1_Stream4_IRQHandler /* DMA1 Stream 4 */
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.word DMA1_Stream5_IRQHandler /* DMA1 Stream 5 */
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.word DMA1_Stream6_IRQHandler /* DMA1 Stream 6 */
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.word ADC_IRQHandler /* ADC1, ADC2 and ADC3s */
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.word CAN1_TX_IRQHandler /* CAN1 TX */
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.word CAN1_RX0_IRQHandler /* CAN1 RX0 */
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.word CAN1_RX1_IRQHandler /* CAN1 RX1 */
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.word CAN1_SCE_IRQHandler /* CAN1 SCE */
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.word EXTI9_5_IRQHandler /* External Line[9:5]s */
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.word TIM1_BRK_TIM9_IRQHandler /* TIM1 Break and TIM9 */
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.word TIM1_UP_TIM10_IRQHandler /* TIM1 Update and TIM10 */
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.word TIM1_TRG_COM_TIM11_IRQHandler /* TIM1 Trigger and Commutation and TIM11 */
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.word TIM1_CC_IRQHandler /* TIM1 Capture Compare */
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.word TIM2_IRQHandler /* TIM2 */
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.word TIM3_IRQHandler /* TIM3 */
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.word TIM4_IRQHandler /* TIM4 */
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.word I2C1_EV_IRQHandler /* I2C1 Event */
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.word I2C1_ER_IRQHandler /* I2C1 Error */
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.word I2C2_EV_IRQHandler /* I2C2 Event */
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.word I2C2_ER_IRQHandler /* I2C2 Error */
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.word SPI1_IRQHandler /* SPI1 */
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.word SPI2_IRQHandler /* SPI2 */
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.word USART1_IRQHandler /* USART1 */
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.word USART2_IRQHandler /* USART2 */
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.word USART3_IRQHandler /* USART3 */
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.word EXTI15_10_IRQHandler /* External Line[15:10]s */
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.word RTC_Alarm_IRQHandler /* RTC Alarm (A and B) through EXTI Line */
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.word OTG_FS_WKUP_IRQHandler /* USB OTG FS Wakeup through EXTI line */
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.word TIM8_BRK_TIM12_IRQHandler /* TIM8 Break and TIM12 */
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.word TIM8_UP_TIM13_IRQHandler /* TIM8 Update and TIM13 */
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.word TIM8_TRG_COM_TIM14_IRQHandler /* TIM8 Trigger and Commutation and TIM14 */
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.word TIM8_CC_IRQHandler /* TIM8 Capture Compare */
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.word DMA1_Stream7_IRQHandler /* DMA1 Stream7 */
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.word FSMC_IRQHandler /* FSMC */
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.word SDIO_IRQHandler /* SDIO */
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.word TIM5_IRQHandler /* TIM5 */
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.word SPI3_IRQHandler /* SPI3 */
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.word UART4_IRQHandler /* UART4 */
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.word UART5_IRQHandler /* UART5 */
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.word TIM6_DAC_IRQHandler /* TIM6 and DAC1&2 underrun errors */
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.word TIM7_IRQHandler /* TIM7 */
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.word DMA2_Stream0_IRQHandler /* DMA2 Stream 0 */
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.word DMA2_Stream1_IRQHandler /* DMA2 Stream 1 */
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.word DMA2_Stream2_IRQHandler /* DMA2 Stream 2 */
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.word DMA2_Stream3_IRQHandler /* DMA2 Stream 3 */
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.word DMA2_Stream4_IRQHandler /* DMA2 Stream 4 */
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.word ETH_IRQHandler /* Ethernet */
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.word ETH_WKUP_IRQHandler /* Ethernet Wakeup through EXTI line */
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.word CAN2_TX_IRQHandler /* CAN2 TX */
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.word CAN2_RX0_IRQHandler /* CAN2 RX0 */
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.word CAN2_RX1_IRQHandler /* CAN2 RX1 */
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.word CAN2_SCE_IRQHandler /* CAN2 SCE */
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.word OTG_FS_IRQHandler /* USB OTG FS */
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.word DMA2_Stream5_IRQHandler /* DMA2 Stream 5 */
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.word DMA2_Stream6_IRQHandler /* DMA2 Stream 6 */
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.word DMA2_Stream7_IRQHandler /* DMA2 Stream 7 */
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.word USART6_IRQHandler /* USART6 */
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.word I2C3_EV_IRQHandler /* I2C3 event */
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.word I2C3_ER_IRQHandler /* I2C3 error */
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.word OTG_HS_EP1_OUT_IRQHandler /* USB OTG HS End Point 1 Out */
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.word OTG_HS_EP1_IN_IRQHandler /* USB OTG HS End Point 1 In */
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.word OTG_HS_WKUP_IRQHandler /* USB OTG HS Wakeup through EXTI */
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.word OTG_HS_IRQHandler /* USB OTG HS */
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.word DCMI_IRQHandler /* DCMI */
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.word CRYP_IRQHandler /* CRYP crypto */
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.word HASH_RNG_IRQHandler /* Hash and Rng */
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.word FPU_IRQHandler /* FPU */
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/*******************************************************************************
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*
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* Provide weak aliases for each Exception handler to the Default_Handler.
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* As they are weak aliases, any function with the same name will override
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* this definition.
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*
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*******************************************************************************/
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.weak NMI_Handler
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.thumb_set NMI_Handler,Default_Handler
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.weak HardFault_Handler
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.thumb_set HardFault_Handler,Default_Handler
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.weak MemManage_Handler
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.thumb_set MemManage_Handler,Default_Handler
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.weak BusFault_Handler
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.thumb_set BusFault_Handler,Default_Handler
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.weak UsageFault_Handler
|
||||
.thumb_set UsageFault_Handler,Default_Handler
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.weak SVC_Handler
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.thumb_set SVC_Handler,Default_Handler
|
||||
|
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.weak DebugMon_Handler
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||||
.thumb_set DebugMon_Handler,Default_Handler
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|
||||
.weak PendSV_Handler
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||||
.thumb_set PendSV_Handler,Default_Handler
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|
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.weak SysTick_Handler
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||||
.thumb_set SysTick_Handler,Default_Handler
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||||
|
||||
.weak WWDG_IRQHandler
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||||
.thumb_set WWDG_IRQHandler,Default_Handler
|
||||
|
||||
.weak PVD_IRQHandler
|
||||
.thumb_set PVD_IRQHandler,Default_Handler
|
||||
|
||||
.weak TAMP_STAMP_IRQHandler
|
||||
.thumb_set TAMP_STAMP_IRQHandler,Default_Handler
|
||||
|
||||
.weak RTC_WKUP_IRQHandler
|
||||
.thumb_set RTC_WKUP_IRQHandler,Default_Handler
|
||||
|
||||
.weak FLASH_IRQHandler
|
||||
.thumb_set FLASH_IRQHandler,Default_Handler
|
||||
|
||||
.weak RCC_IRQHandler
|
||||
.thumb_set RCC_IRQHandler,Default_Handler
|
||||
|
||||
.weak EXTI0_IRQHandler
|
||||
.thumb_set EXTI0_IRQHandler,Default_Handler
|
||||
|
||||
.weak EXTI1_IRQHandler
|
||||
.thumb_set EXTI1_IRQHandler,Default_Handler
|
||||
|
||||
.weak EXTI2_IRQHandler
|
||||
.thumb_set EXTI2_IRQHandler,Default_Handler
|
||||
|
||||
.weak EXTI3_IRQHandler
|
||||
.thumb_set EXTI3_IRQHandler,Default_Handler
|
||||
|
||||
.weak EXTI4_IRQHandler
|
||||
.thumb_set EXTI4_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA1_Stream0_IRQHandler
|
||||
.thumb_set DMA1_Stream0_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA1_Stream1_IRQHandler
|
||||
.thumb_set DMA1_Stream1_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA1_Stream2_IRQHandler
|
||||
.thumb_set DMA1_Stream2_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA1_Stream3_IRQHandler
|
||||
.thumb_set DMA1_Stream3_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA1_Stream4_IRQHandler
|
||||
.thumb_set DMA1_Stream4_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA1_Stream5_IRQHandler
|
||||
.thumb_set DMA1_Stream5_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA1_Stream6_IRQHandler
|
||||
.thumb_set DMA1_Stream6_IRQHandler,Default_Handler
|
||||
|
||||
.weak ADC_IRQHandler
|
||||
.thumb_set ADC_IRQHandler,Default_Handler
|
||||
|
||||
.weak CAN1_TX_IRQHandler
|
||||
.thumb_set CAN1_TX_IRQHandler,Default_Handler
|
||||
|
||||
.weak CAN1_RX0_IRQHandler
|
||||
.thumb_set CAN1_RX0_IRQHandler,Default_Handler
|
||||
|
||||
.weak CAN1_RX1_IRQHandler
|
||||
.thumb_set CAN1_RX1_IRQHandler,Default_Handler
|
||||
|
||||
.weak CAN1_SCE_IRQHandler
|
||||
.thumb_set CAN1_SCE_IRQHandler,Default_Handler
|
||||
|
||||
.weak EXTI9_5_IRQHandler
|
||||
.thumb_set EXTI9_5_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM1_BRK_TIM9_IRQHandler
|
||||
.thumb_set TIM1_BRK_TIM9_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM1_UP_TIM10_IRQHandler
|
||||
.thumb_set TIM1_UP_TIM10_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM1_TRG_COM_TIM11_IRQHandler
|
||||
.thumb_set TIM1_TRG_COM_TIM11_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM1_CC_IRQHandler
|
||||
.thumb_set TIM1_CC_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM2_IRQHandler
|
||||
.thumb_set TIM2_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM3_IRQHandler
|
||||
.thumb_set TIM3_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM4_IRQHandler
|
||||
.thumb_set TIM4_IRQHandler,Default_Handler
|
||||
|
||||
.weak I2C1_EV_IRQHandler
|
||||
.thumb_set I2C1_EV_IRQHandler,Default_Handler
|
||||
|
||||
.weak I2C1_ER_IRQHandler
|
||||
.thumb_set I2C1_ER_IRQHandler,Default_Handler
|
||||
|
||||
.weak I2C2_EV_IRQHandler
|
||||
.thumb_set I2C2_EV_IRQHandler,Default_Handler
|
||||
|
||||
.weak I2C2_ER_IRQHandler
|
||||
.thumb_set I2C2_ER_IRQHandler,Default_Handler
|
||||
|
||||
.weak SPI1_IRQHandler
|
||||
.thumb_set SPI1_IRQHandler,Default_Handler
|
||||
|
||||
.weak SPI2_IRQHandler
|
||||
.thumb_set SPI2_IRQHandler,Default_Handler
|
||||
|
||||
.weak USART1_IRQHandler
|
||||
.thumb_set USART1_IRQHandler,Default_Handler
|
||||
|
||||
.weak USART2_IRQHandler
|
||||
.thumb_set USART2_IRQHandler,Default_Handler
|
||||
|
||||
.weak USART3_IRQHandler
|
||||
.thumb_set USART3_IRQHandler,Default_Handler
|
||||
|
||||
.weak EXTI15_10_IRQHandler
|
||||
.thumb_set EXTI15_10_IRQHandler,Default_Handler
|
||||
|
||||
.weak RTC_Alarm_IRQHandler
|
||||
.thumb_set RTC_Alarm_IRQHandler,Default_Handler
|
||||
|
||||
.weak OTG_FS_WKUP_IRQHandler
|
||||
.thumb_set OTG_FS_WKUP_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM8_BRK_TIM12_IRQHandler
|
||||
.thumb_set TIM8_BRK_TIM12_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM8_UP_TIM13_IRQHandler
|
||||
.thumb_set TIM8_UP_TIM13_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM8_TRG_COM_TIM14_IRQHandler
|
||||
.thumb_set TIM8_TRG_COM_TIM14_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM8_CC_IRQHandler
|
||||
.thumb_set TIM8_CC_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA1_Stream7_IRQHandler
|
||||
.thumb_set DMA1_Stream7_IRQHandler,Default_Handler
|
||||
|
||||
.weak FSMC_IRQHandler
|
||||
.thumb_set FSMC_IRQHandler,Default_Handler
|
||||
|
||||
.weak SDIO_IRQHandler
|
||||
.thumb_set SDIO_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM5_IRQHandler
|
||||
.thumb_set TIM5_IRQHandler,Default_Handler
|
||||
|
||||
.weak SPI3_IRQHandler
|
||||
.thumb_set SPI3_IRQHandler,Default_Handler
|
||||
|
||||
.weak UART4_IRQHandler
|
||||
.thumb_set UART4_IRQHandler,Default_Handler
|
||||
|
||||
.weak UART5_IRQHandler
|
||||
.thumb_set UART5_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM6_DAC_IRQHandler
|
||||
.thumb_set TIM6_DAC_IRQHandler,Default_Handler
|
||||
|
||||
.weak TIM7_IRQHandler
|
||||
.thumb_set TIM7_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA2_Stream0_IRQHandler
|
||||
.thumb_set DMA2_Stream0_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA2_Stream1_IRQHandler
|
||||
.thumb_set DMA2_Stream1_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA2_Stream2_IRQHandler
|
||||
.thumb_set DMA2_Stream2_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA2_Stream3_IRQHandler
|
||||
.thumb_set DMA2_Stream3_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA2_Stream4_IRQHandler
|
||||
.thumb_set DMA2_Stream4_IRQHandler,Default_Handler
|
||||
|
||||
.weak ETH_IRQHandler
|
||||
.thumb_set ETH_IRQHandler,Default_Handler
|
||||
|
||||
.weak ETH_WKUP_IRQHandler
|
||||
.thumb_set ETH_WKUP_IRQHandler,Default_Handler
|
||||
|
||||
.weak CAN2_TX_IRQHandler
|
||||
.thumb_set CAN2_TX_IRQHandler,Default_Handler
|
||||
|
||||
.weak CAN2_RX0_IRQHandler
|
||||
.thumb_set CAN2_RX0_IRQHandler,Default_Handler
|
||||
|
||||
.weak CAN2_RX1_IRQHandler
|
||||
.thumb_set CAN2_RX1_IRQHandler,Default_Handler
|
||||
|
||||
.weak CAN2_SCE_IRQHandler
|
||||
.thumb_set CAN2_SCE_IRQHandler,Default_Handler
|
||||
|
||||
.weak OTG_FS_IRQHandler
|
||||
.thumb_set OTG_FS_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA2_Stream5_IRQHandler
|
||||
.thumb_set DMA2_Stream5_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA2_Stream6_IRQHandler
|
||||
.thumb_set DMA2_Stream6_IRQHandler,Default_Handler
|
||||
|
||||
.weak DMA2_Stream7_IRQHandler
|
||||
.thumb_set DMA2_Stream7_IRQHandler,Default_Handler
|
||||
|
||||
.weak USART6_IRQHandler
|
||||
.thumb_set USART6_IRQHandler,Default_Handler
|
||||
|
||||
.weak I2C3_EV_IRQHandler
|
||||
.thumb_set I2C3_EV_IRQHandler,Default_Handler
|
||||
|
||||
.weak I2C3_ER_IRQHandler
|
||||
.thumb_set I2C3_ER_IRQHandler,Default_Handler
|
||||
|
||||
.weak OTG_HS_EP1_OUT_IRQHandler
|
||||
.thumb_set OTG_HS_EP1_OUT_IRQHandler,Default_Handler
|
||||
|
||||
.weak OTG_HS_EP1_IN_IRQHandler
|
||||
.thumb_set OTG_HS_EP1_IN_IRQHandler,Default_Handler
|
||||
|
||||
.weak OTG_HS_WKUP_IRQHandler
|
||||
.thumb_set OTG_HS_WKUP_IRQHandler,Default_Handler
|
||||
|
||||
.weak OTG_HS_IRQHandler
|
||||
.thumb_set OTG_HS_IRQHandler,Default_Handler
|
||||
|
||||
.weak DCMI_IRQHandler
|
||||
.thumb_set DCMI_IRQHandler,Default_Handler
|
||||
|
||||
.weak CRYP_IRQHandler
|
||||
.thumb_set CRYP_IRQHandler,Default_Handler
|
||||
|
||||
.weak HASH_RNG_IRQHandler
|
||||
.thumb_set HASH_RNG_IRQHandler,Default_Handler
|
||||
|
||||
.weak FPU_IRQHandler
|
||||
.thumb_set FPU_IRQHandler,Default_Handler
|
||||
|
||||
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
|
||||
545
example/src/system_stm32f4xx.c
Normal file
545
example/src/system_stm32f4xx.c
Normal file
@@ -0,0 +1,545 @@
|
||||
/**
|
||||
******************************************************************************
|
||||
* @file system_stm32f4xx.c
|
||||
* @author MCD Application Team
|
||||
* @version V1.0.0
|
||||
* @date 19-September-2011
|
||||
* @brief CMSIS Cortex-M4 Device Peripheral Access Layer System Source File.
|
||||
* This file contains the system clock configuration for STM32F4xx devices,
|
||||
* and is generated by the clock configuration tool
|
||||
* stm32f4xx_Clock_Configuration_V1.0.0.xls
|
||||
*
|
||||
* 1. This file provides two functions and one global variable to be called from
|
||||
* user application:
|
||||
* - SystemInit(): Setups the system clock (System clock source, PLL Multiplier
|
||||
* and Divider factors, AHB/APBx prescalers and Flash settings),
|
||||
* depending on the configuration made in the clock xls tool.
|
||||
* This function is called at startup just after reset and
|
||||
* before branch to main program. This call is made inside
|
||||
* the "startup_stm32f4xx.s" file.
|
||||
*
|
||||
* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
|
||||
* by the user application to setup the SysTick
|
||||
* timer or configure other parameters.
|
||||
*
|
||||
* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
|
||||
* be called whenever the core clock is changed
|
||||
* during program execution.
|
||||
*
|
||||
* 2. After each device reset the HSI (16 MHz) is used as system clock source.
|
||||
* Then SystemInit() function is called, in "startup_stm32f4xx.s" file, to
|
||||
* configure the system clock before to branch to main program.
|
||||
*
|
||||
* 3. If the system clock source selected by user fails to startup, the SystemInit()
|
||||
* function will do nothing and HSI still used as system clock source. User can
|
||||
* add some code to deal with this issue inside the SetSysClock() function.
|
||||
*
|
||||
* 4. The default value of HSE crystal is set to 8 MHz, refer to "HSE_VALUE" define
|
||||
* in "stm32f4xx.h" file. When HSE is used as system clock source, directly or
|
||||
* through PLL, and you are using different crystal you have to adapt the HSE
|
||||
* value to your own configuration.
|
||||
*
|
||||
* 5. This file configures the system clock as follows:
|
||||
*=============================================================================
|
||||
*=============================================================================
|
||||
* Supported STM32F4xx device revision | Rev A
|
||||
*-----------------------------------------------------------------------------
|
||||
* System Clock source | PLL (HSE)
|
||||
*-----------------------------------------------------------------------------
|
||||
* SYSCLK(Hz) | 168000000
|
||||
*-----------------------------------------------------------------------------
|
||||
* HCLK(Hz) | 168000000
|
||||
*-----------------------------------------------------------------------------
|
||||
* AHB Prescaler | 1
|
||||
*-----------------------------------------------------------------------------
|
||||
* APB1 Prescaler | 4
|
||||
*-----------------------------------------------------------------------------
|
||||
* APB2 Prescaler | 2
|
||||
*-----------------------------------------------------------------------------
|
||||
* HSE Frequency(Hz) | 8000000
|
||||
*-----------------------------------------------------------------------------
|
||||
* PLL_M | 8
|
||||
*-----------------------------------------------------------------------------
|
||||
* PLL_N | 336
|
||||
*-----------------------------------------------------------------------------
|
||||
* PLL_P | 2
|
||||
*-----------------------------------------------------------------------------
|
||||
* PLL_Q | 7
|
||||
*-----------------------------------------------------------------------------
|
||||
* PLLI2S_N | NA
|
||||
*-----------------------------------------------------------------------------
|
||||
* PLLI2S_R | NA
|
||||
*-----------------------------------------------------------------------------
|
||||
* I2S input clock | NA
|
||||
*-----------------------------------------------------------------------------
|
||||
* VDD(V) | 3.3
|
||||
*-----------------------------------------------------------------------------
|
||||
* High Performance mode | Enabled
|
||||
*-----------------------------------------------------------------------------
|
||||
* Flash Latency(WS) | 5
|
||||
*-----------------------------------------------------------------------------
|
||||
* Prefetch Buffer | OFF
|
||||
*-----------------------------------------------------------------------------
|
||||
* Instruction cache | ON
|
||||
*-----------------------------------------------------------------------------
|
||||
* Data cache | ON
|
||||
*-----------------------------------------------------------------------------
|
||||
* Require 48MHz for USB OTG FS, | Enabled
|
||||
* SDIO and RNG clock |
|
||||
*-----------------------------------------------------------------------------
|
||||
*=============================================================================
|
||||
******************************************************************************
|
||||
* @attention
|
||||
*
|
||||
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
|
||||
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
|
||||
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
|
||||
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
|
||||
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
|
||||
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
|
||||
*
|
||||
* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
|
||||
******************************************************************************
|
||||
*/
|
||||
|
||||
/** @addtogroup CMSIS
|
||||
* @{
|
||||
*/
|
||||
|
||||
/** @addtogroup stm32f4xx_system
|
||||
* @{
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F4xx_System_Private_Includes
|
||||
* @{
|
||||
*/
|
||||
|
||||
#include "stm32f4xx.h"
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F4xx_System_Private_TypesDefinitions
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F4xx_System_Private_Defines
|
||||
* @{
|
||||
*/
|
||||
|
||||
/*!< Uncomment the following line if you need to use external SRAM mounted
|
||||
on STM324xG_EVAL board as data memory */
|
||||
/* #define DATA_IN_ExtSRAM */
|
||||
|
||||
/*!< Uncomment the following line if you need to relocate your vector Table in
|
||||
Internal SRAM. */
|
||||
/* #define VECT_TAB_SRAM */
|
||||
#define VECT_TAB_OFFSET 0x00 /*!< Vector Table base offset field.
|
||||
This value must be a multiple of 0x200. */
|
||||
|
||||
|
||||
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL_M) * PLL_N */
|
||||
#define PLL_M 8
|
||||
#define PLL_N 336
|
||||
|
||||
/* SYSCLK = PLL_VCO / PLL_P */
|
||||
#define PLL_P 2
|
||||
|
||||
/* USB OTG FS, SDIO and RNG Clock = PLL_VCO / PLLQ */
|
||||
#define PLL_Q 7
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F4xx_System_Private_Macros
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F4xx_System_Private_Variables
|
||||
* @{
|
||||
*/
|
||||
|
||||
uint32_t SystemCoreClock = 168000000;
|
||||
|
||||
__I uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F4xx_System_Private_FunctionPrototypes
|
||||
* @{
|
||||
*/
|
||||
|
||||
static void SetSysClock(void);
|
||||
#ifdef DATA_IN_ExtSRAM
|
||||
static void SystemInit_ExtMemCtl(void);
|
||||
#endif /* DATA_IN_ExtSRAM */
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F4xx_System_Private_Functions
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief Setup the microcontroller system
|
||||
* Initialize the Embedded Flash Interface, the PLL and update the
|
||||
* SystemFrequency variable.
|
||||
* @param None
|
||||
* @retval None
|
||||
*/
|
||||
void SystemInit(void)
|
||||
{
|
||||
/* Reset the RCC clock configuration to the default reset state ------------*/
|
||||
/* Set HSION bit */
|
||||
RCC->CR |= (uint32_t)0x00000001;
|
||||
|
||||
/* Reset CFGR register */
|
||||
RCC->CFGR = 0x00000000;
|
||||
|
||||
/* Reset HSEON, CSSON and PLLON bits */
|
||||
RCC->CR &= (uint32_t)0xFEF6FFFF;
|
||||
|
||||
/* Reset PLLCFGR register */
|
||||
RCC->PLLCFGR = 0x24003010;
|
||||
|
||||
/* Reset HSEBYP bit */
|
||||
RCC->CR &= (uint32_t)0xFFFBFFFF;
|
||||
|
||||
/* Disable all interrupts */
|
||||
RCC->CIR = 0x00000000;
|
||||
|
||||
#ifdef DATA_IN_ExtSRAM
|
||||
SystemInit_ExtMemCtl();
|
||||
#endif /* DATA_IN_ExtSRAM */
|
||||
|
||||
/* Configure the System clock source, PLL Multiplier and Divider factors,
|
||||
AHB/APBx prescalers and Flash settings ----------------------------------*/
|
||||
SetSysClock();
|
||||
|
||||
/* Configure the Vector Table location add offset address ------------------*/
|
||||
#ifdef VECT_TAB_SRAM
|
||||
SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */
|
||||
#else
|
||||
SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */
|
||||
#endif
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Update SystemCoreClock variable according to Clock Register Values.
|
||||
* The SystemCoreClock variable contains the core clock (HCLK), it can
|
||||
* be used by the user application to setup the SysTick timer or configure
|
||||
* other parameters.
|
||||
*
|
||||
* @note Each time the core clock (HCLK) changes, this function must be called
|
||||
* to update SystemCoreClock variable value. Otherwise, any configuration
|
||||
* based on this variable will be incorrect.
|
||||
*
|
||||
* @note - The system frequency computed by this function is not the real
|
||||
* frequency in the chip. It is calculated based on the predefined
|
||||
* constant and the selected clock source:
|
||||
*
|
||||
* - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
|
||||
*
|
||||
* - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
|
||||
*
|
||||
* - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
|
||||
* or HSI_VALUE(*) multiplied/divided by the PLL factors.
|
||||
*
|
||||
* (*) HSI_VALUE is a constant defined in stm32f4xx.h file (default value
|
||||
* 16 MHz) but the real value may vary depending on the variations
|
||||
* in voltage and temperature.
|
||||
*
|
||||
* (**) HSE_VALUE is a constant defined in stm32f4xx.h file (default value
|
||||
* 25 MHz), user has to ensure that HSE_VALUE is same as the real
|
||||
* frequency of the crystal used. Otherwise, this function may
|
||||
* have wrong result.
|
||||
*
|
||||
* - The result of this function could be not correct when using fractional
|
||||
* value for HSE crystal.
|
||||
*
|
||||
* @param None
|
||||
* @retval None
|
||||
*/
|
||||
void SystemCoreClockUpdate(void)
|
||||
{
|
||||
uint32_t tmp = 0, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2;
|
||||
|
||||
/* Get SYSCLK source -------------------------------------------------------*/
|
||||
tmp = RCC->CFGR & RCC_CFGR_SWS;
|
||||
|
||||
switch (tmp)
|
||||
{
|
||||
case 0x00: /* HSI used as system clock source */
|
||||
SystemCoreClock = HSI_VALUE;
|
||||
break;
|
||||
case 0x04: /* HSE used as system clock source */
|
||||
SystemCoreClock = HSE_VALUE;
|
||||
break;
|
||||
case 0x08: /* PLL used as system clock source */
|
||||
|
||||
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL_M) * PLL_N
|
||||
SYSCLK = PLL_VCO / PLL_P
|
||||
*/
|
||||
pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) >> 22;
|
||||
pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM;
|
||||
|
||||
if (pllsource != 0)
|
||||
{
|
||||
/* HSE used as PLL clock source */
|
||||
pllvco = (HSE_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* HSI used as PLL clock source */
|
||||
pllvco = (HSI_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6);
|
||||
}
|
||||
|
||||
pllp = (((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) >>16) + 1 ) *2;
|
||||
SystemCoreClock = pllvco/pllp;
|
||||
break;
|
||||
default:
|
||||
SystemCoreClock = HSI_VALUE;
|
||||
break;
|
||||
}
|
||||
/* Compute HCLK frequency --------------------------------------------------*/
|
||||
/* Get HCLK prescaler */
|
||||
tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
|
||||
/* HCLK frequency */
|
||||
SystemCoreClock >>= tmp;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Configures the System clock source, PLL Multiplier and Divider factors,
|
||||
* AHB/APBx prescalers and Flash settings
|
||||
* @Note This function should be called only once the RCC clock configuration
|
||||
* is reset to the default reset state (done in SystemInit() function).
|
||||
* @param None
|
||||
* @retval None
|
||||
*/
|
||||
static void SetSysClock(void)
|
||||
{
|
||||
/******************************************************************************/
|
||||
/* PLL (clocked by HSE) used as System clock source */
|
||||
/******************************************************************************/
|
||||
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
|
||||
|
||||
/* Enable HSE */
|
||||
RCC->CR |= ((uint32_t)RCC_CR_HSEON);
|
||||
|
||||
/* Wait till HSE is ready and if Time out is reached exit */
|
||||
do
|
||||
{
|
||||
HSEStatus = RCC->CR & RCC_CR_HSERDY;
|
||||
StartUpCounter++;
|
||||
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
|
||||
|
||||
if ((RCC->CR & RCC_CR_HSERDY) != RESET)
|
||||
{
|
||||
HSEStatus = (uint32_t)0x01;
|
||||
}
|
||||
else
|
||||
{
|
||||
HSEStatus = (uint32_t)0x00;
|
||||
}
|
||||
|
||||
if (HSEStatus == (uint32_t)0x01)
|
||||
{
|
||||
/* Enable high performance mode, System frequency up to 168 MHz */
|
||||
RCC->APB1ENR |= RCC_APB1ENR_PWREN;
|
||||
PWR->CR |= PWR_CR_PMODE;
|
||||
|
||||
/* HCLK = SYSCLK / 1*/
|
||||
RCC->CFGR |= RCC_CFGR_HPRE_DIV1;
|
||||
|
||||
/* PCLK2 = HCLK / 2*/
|
||||
RCC->CFGR |= RCC_CFGR_PPRE2_DIV2;
|
||||
|
||||
/* PCLK1 = HCLK / 4*/
|
||||
RCC->CFGR |= RCC_CFGR_PPRE1_DIV4;
|
||||
|
||||
/* Configure the main PLL */
|
||||
RCC->PLLCFGR = PLL_M | (PLL_N << 6) | (((PLL_P >> 1) -1) << 16) |
|
||||
(RCC_PLLCFGR_PLLSRC_HSE) | (PLL_Q << 24);
|
||||
|
||||
/* Enable the main PLL */
|
||||
RCC->CR |= RCC_CR_PLLON;
|
||||
|
||||
/* Wait till the main PLL is ready */
|
||||
while((RCC->CR & RCC_CR_PLLRDY) == 0)
|
||||
{
|
||||
}
|
||||
|
||||
/* Configure Flash prefetch, Instruction cache, Data cache and wait state */
|
||||
FLASH->ACR = FLASH_ACR_ICEN |FLASH_ACR_DCEN |FLASH_ACR_LATENCY_5WS;
|
||||
|
||||
/* Select the main PLL as system clock source */
|
||||
RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
|
||||
RCC->CFGR |= RCC_CFGR_SW_PLL;
|
||||
|
||||
/* Wait till the main PLL is used as system clock source */
|
||||
while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS ) != RCC_CFGR_SWS_PLL);
|
||||
{
|
||||
}
|
||||
}
|
||||
else
|
||||
{ /* If HSE fails to start-up, the application will have wrong clock
|
||||
configuration. User can add here some code to deal with this error */
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Setup the external memory controller. Called in startup_stm32f4xx.s
|
||||
* before jump to __main
|
||||
* @param None
|
||||
* @retval None
|
||||
*/
|
||||
#ifdef DATA_IN_ExtSRAM
|
||||
/**
|
||||
* @brief Setup the external memory controller.
|
||||
* Called in startup_stm32f4xx.s before jump to main.
|
||||
* This function configures the external SRAM mounted on STM324xG_EVAL board
|
||||
* This SRAM will be used as program data memory (including heap and stack).
|
||||
* @param None
|
||||
* @retval None
|
||||
*/
|
||||
void SystemInit_ExtMemCtl(void)
|
||||
{
|
||||
/*-- GPIOs Configuration -----------------------------------------------------*/
|
||||
/*
|
||||
+-------------------+--------------------+------------------+------------------+
|
||||
+ SRAM pins assignment +
|
||||
+-------------------+--------------------+------------------+------------------+
|
||||
| PD0 <-> FSMC_D2 | PE0 <-> FSMC_NBL0 | PF0 <-> FSMC_A0 | PG0 <-> FSMC_A10 |
|
||||
| PD1 <-> FSMC_D3 | PE1 <-> FSMC_NBL1 | PF1 <-> FSMC_A1 | PG1 <-> FSMC_A11 |
|
||||
| PD4 <-> FSMC_NOE | PE3 <-> FSMC_A19 | PF2 <-> FSMC_A2 | PG2 <-> FSMC_A12 |
|
||||
| PD5 <-> FSMC_NWE | PE4 <-> FSMC_A20 | PF3 <-> FSMC_A3 | PG3 <-> FSMC_A13 |
|
||||
| PD8 <-> FSMC_D13 | PE7 <-> FSMC_D4 | PF4 <-> FSMC_A4 | PG4 <-> FSMC_A14 |
|
||||
| PD9 <-> FSMC_D14 | PE8 <-> FSMC_D5 | PF5 <-> FSMC_A5 | PG5 <-> FSMC_A15 |
|
||||
| PD10 <-> FSMC_D15 | PE9 <-> FSMC_D6 | PF12 <-> FSMC_A6 | PG9 <-> FSMC_NE2 |
|
||||
| PD11 <-> FSMC_A16 | PE10 <-> FSMC_D7 | PF13 <-> FSMC_A7 |------------------+
|
||||
| PD12 <-> FSMC_A17 | PE11 <-> FSMC_D8 | PF14 <-> FSMC_A8 |
|
||||
| PD13 <-> FSMC_A18 | PE12 <-> FSMC_D9 | PF15 <-> FSMC_A9 |
|
||||
| PD14 <-> FSMC_D0 | PE13 <-> FSMC_D10 |------------------+
|
||||
| PD15 <-> FSMC_D1 | PE14 <-> FSMC_D11 |
|
||||
| | PE15 <-> FSMC_D12 |
|
||||
+-------------------+--------------------+
|
||||
*/
|
||||
/* Enable GPIOD, GPIOE, GPIOF and GPIOG interface clock */
|
||||
RCC->AHB1ENR = 0x00000078;
|
||||
|
||||
/* Connect PDx pins to FSMC Alternate function */
|
||||
GPIOD->AFR[0] = 0x00cc00cc;
|
||||
GPIOD->AFR[1] = 0xcc0ccccc;
|
||||
/* Configure PDx pins in Alternate function mode */
|
||||
GPIOD->MODER = 0xaaaa0a0a;
|
||||
/* Configure PDx pins speed to 100 MHz */
|
||||
GPIOD->OSPEEDR = 0xffff0f0f;
|
||||
/* Configure PDx pins Output type to push-pull */
|
||||
GPIOD->OTYPER = 0x00000000;
|
||||
/* No pull-up, pull-down for PDx pins */
|
||||
GPIOD->PUPDR = 0x00000000;
|
||||
|
||||
/* Connect PEx pins to FSMC Alternate function */
|
||||
GPIOE->AFR[0] = 0xc00cc0cc;
|
||||
GPIOE->AFR[1] = 0xcccccccc;
|
||||
/* Configure PEx pins in Alternate function mode */
|
||||
GPIOE->MODER = 0xaaaa828a;
|
||||
/* Configure PEx pins speed to 100 MHz */
|
||||
GPIOE->OSPEEDR = 0xffffc3cf;
|
||||
/* Configure PEx pins Output type to push-pull */
|
||||
GPIOE->OTYPER = 0x00000000;
|
||||
/* No pull-up, pull-down for PEx pins */
|
||||
GPIOE->PUPDR = 0x00000000;
|
||||
|
||||
/* Connect PFx pins to FSMC Alternate function */
|
||||
GPIOF->AFR[0] = 0x00cccccc;
|
||||
GPIOF->AFR[1] = 0xcccc0000;
|
||||
/* Configure PFx pins in Alternate function mode */
|
||||
GPIOF->MODER = 0xaa000aaa;
|
||||
/* Configure PFx pins speed to 100 MHz */
|
||||
GPIOF->OSPEEDR = 0xff000fff;
|
||||
/* Configure PFx pins Output type to push-pull */
|
||||
GPIOF->OTYPER = 0x00000000;
|
||||
/* No pull-up, pull-down for PFx pins */
|
||||
GPIOF->PUPDR = 0x00000000;
|
||||
|
||||
/* Connect PGx pins to FSMC Alternate function */
|
||||
GPIOG->AFR[0] = 0x00cccccc;
|
||||
GPIOG->AFR[1] = 0x000000c0;
|
||||
/* Configure PGx pins in Alternate function mode */
|
||||
GPIOG->MODER = 0x00080aaa;
|
||||
/* Configure PGx pins speed to 100 MHz */
|
||||
GPIOG->OSPEEDR = 0x000c0fff;
|
||||
/* Configure PGx pins Output type to push-pull */
|
||||
GPIOG->OTYPER = 0x00000000;
|
||||
/* No pull-up, pull-down for PGx pins */
|
||||
GPIOG->PUPDR = 0x00000000;
|
||||
|
||||
/*-- FSMC Configuration ------------------------------------------------------*/
|
||||
/* Enable the FSMC interface clock */
|
||||
RCC->AHB3ENR = 0x00000001;
|
||||
|
||||
/* Configure and enable Bank1_SRAM2 */
|
||||
FSMC_Bank1->BTCR[2] = 0x00001015;
|
||||
FSMC_Bank1->BTCR[3] = 0x00010603;//0x00010400;
|
||||
FSMC_Bank1E->BWTR[2] = 0x0fffffff;
|
||||
/*
|
||||
Bank1_SRAM2 is configured as follow:
|
||||
|
||||
p.FSMC_AddressSetupTime = 3;//0;
|
||||
p.FSMC_AddressHoldTime = 0;
|
||||
p.FSMC_DataSetupTime = 6;//4;
|
||||
p.FSMC_BusTurnAroundDuration = 1;
|
||||
p.FSMC_CLKDivision = 0;
|
||||
p.FSMC_DataLatency = 0;
|
||||
p.FSMC_AccessMode = FSMC_AccessMode_A;
|
||||
|
||||
FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM2;
|
||||
FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
|
||||
FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_PSRAM;
|
||||
FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
|
||||
FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
|
||||
FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable;
|
||||
FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
|
||||
FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
|
||||
FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
|
||||
FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
|
||||
FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
|
||||
FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
|
||||
FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
|
||||
FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
|
||||
FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;
|
||||
*/
|
||||
|
||||
}
|
||||
#endif /* DATA_IN_ExtSRAM */
|
||||
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
|
||||
|
||||
Reference in New Issue
Block a user