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Added IRQ for user button, fixed some touchproblems.

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This commit is contained in:
id101010
2015-06-01 21:25:49 +02:00
parent e7300bf83b
commit caa7b5c50f
4 changed files with 87 additions and 46 deletions
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81
discovery/src/ll_touch.c
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@@ -1,4 +1,6 @@
#include"ll_touch.h"
#include"screen.h"
#include"screen_guitest.h"
#include<stm32f4xx_spi.h>
#include<stm32f4xx_rcc.h>
#include<stm32f4xx_exti.h>
@@ -11,6 +13,7 @@
/* Defines ---------------------------------------------------------- */
#define CLEAR_CS GPIO_ResetBits(GPIOB,GPIO_Pin_9)
#define SET_CS GPIO_SetBits(GPIOB,GPIO_Pin_9)
#define PENIRQ !GPIO_ReadInputDataBit(GPIOC, GPIO_Pin_1)
#define REQ_X_COORD 0x90 // Request x coordinate
#define REQ_Y_COORD 0xD0 // Request y coordinate
#define REQ_1_DATAB 0x00 // Request one databyte
@@ -35,13 +38,13 @@ bool ll_touch_init();
static void init_exti();
static void init_timer();
static uint8_t touch_send(uint8_t dat);
static uint16_t avg_vals(uint16_t samples[], uint16_t len);
static uint16_t avg_vals(volatile uint16_t samples[], uint16_t len);
static uint16_t touch_get_y_coord();
static uint16_t touch_get_y_coord();
void touch_test(uint16_t x, uint16_t y);
/* Functions --------------------------------------------------------- */
static uint16_t avg_vals(uint16_t samples[], uint16_t len)
static uint16_t avg_vals(volatile uint16_t samples[], uint16_t len)
{
uint16_t j = 0;
uint32_t tmp = 0;
@@ -164,34 +167,64 @@ bool ll_touch_init()
static void init_exti()
{
// PENIRQ -> EXTI1 (PC1)
// Blue Button -> EXTI0 (PA0)
/* init structures */
GPIO_InitTypeDef gpio;
EXTI_InitTypeDef exti;
NVIC_InitTypeDef nvic;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); // enable GPIOA clock
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); // enable SYSCFG clock
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); // enable GPIOC clock
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); // enable GPIOA clock
/* Set GPIOA0 as input */
/* Set GPIOC1 as input */
gpio.GPIO_Mode = GPIO_Mode_IN;
gpio.GPIO_OType = GPIO_OType_PP;
gpio.GPIO_Pin = GPIO_Pin_0;
gpio.GPIO_Pin = GPIO_Pin_1;
gpio.GPIO_PuPd = GPIO_PuPd_UP;
gpio.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_Init(GPIOC, &gpio);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource1); // Bind Exti_line1 to PC1
/* Set GPIOA0 as input */
gpio.GPIO_Mode = GPIO_Mode_IN;
gpio.GPIO_OType = GPIO_OType_OD;
gpio.GPIO_Pin = GPIO_Pin_0;
gpio.GPIO_PuPd = GPIO_PuPd_NOPULL;
gpio.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_Init(GPIOA, &gpio);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource0); // Bind Exti_line0 to PA0
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource0); // Bind Exti_line1 to PC1
/* EXTI on PA0 */
/* EXTI on PC1 */
EXTI_StructInit(&exti);
exti.EXTI_Line = EXTI_Line0;
exti.EXTI_Line = EXTI_Line1;
exti.EXTI_Mode = EXTI_Mode_Interrupt;
exti.EXTI_Trigger = EXTI_Trigger_Falling; // Trigger on falling edge (PENIRQ)
exti.EXTI_LineCmd = ENABLE;
EXTI_Init(&exti);
/* EXTI on PA0 */
EXTI_StructInit(&exti);
exti.EXTI_Line = EXTI_Line0;
exti.EXTI_Mode = EXTI_Mode_Interrupt;
exti.EXTI_Trigger = EXTI_Trigger_Falling; // Trigger on calibration (Blue button)
exti.EXTI_LineCmd = ENABLE;
EXTI_Init(&exti);
/* Add IRQ vector to NVIC */
nvic.NVIC_IRQChannel = EXTI0_IRQn; // PD0 -> EXTI_Line0 -> EXTI0_IRQn vector
nvic.NVIC_IRQChannel = EXTI1_IRQn; // PC1 -> EXTI_Line1 -> EXTI1_IRQn vector
nvic.NVIC_IRQChannelPreemptionPriority = 0x00; // Set priority
nvic.NVIC_IRQChannelSubPriority = 0x00; // Set sub priority
nvic.NVIC_IRQChannelCmd = ENABLE; // Enable interrupt
NVIC_Init(&nvic); // Config NVIC
/* Add IRQ vector to NVIC */
nvic.NVIC_IRQChannel = EXTI0_IRQn; // PA0 -> EXTI_Line0 -> EXTI0_IRQn vector
nvic.NVIC_IRQChannelPreemptionPriority = 0x00; // Set priority
nvic.NVIC_IRQChannelSubPriority = 0x00; // Set sub priority
nvic.NVIC_IRQChannelCmd = ENABLE; // Enable interrupt
@@ -218,33 +251,41 @@ static void init_timer()
void EXTI0_IRQHandler()
{
if (EXTI_GetITStatus(EXTI_Line0) == SET) { // If the right interrupt flag is set
TIM_Cmd(TIM7, ENABLE); // Start the timer
gui_screen_navigate(get_screen_guitest());
EXTI_ClearITPendingBit(EXTI_Line0); // Clear interrupt flag
}
}
void EXTI1_IRQHandler()
{
if (EXTI_GetITStatus(EXTI_Line1) == SET) { // If the right interrupt flag is set
TIM_Cmd(TIM7, ENABLE); // Start the timer
EXTI_ClearITPendingBit(EXTI_Line1); // Clear interrupt flag
}
}
void TIM7_IRQHandler()
{
if(TIM_GetFlagStatus(TIM7, TIM_IT_Update) == SET){ // Make sure the interrupt flag is set
TIM_Cmd(TIM7, DISABLE); // Disable the timer during the measuring
if(!GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0)){ // Only do this if the PENIRQ line is still low
/* Sample 16 times and submit */
for(i = 0; i < (NSAMPLE-1); i++){
/* Apply some calibration to the measured positions */
if(PENIRQ){ // Only do this if the PENIRQ line is still low
for(i = 0; i < (NSAMPLE-1); i++){ // Sample 16 times and apply some calibration
x_samples[i] = (((long)(DWIDTH - 2 * CCENTER) * 2 * (long)((long)touch_get_x_coord() - x1) / dx + 1) >> 1) + CCENTER;
y_samples[i] = (((long)(DHEIGHT -2 * CCENTER) * 2 * (long)((long)touch_get_y_coord() - y1) / dy + 1) >> 1) + CCENTER;
}
touch_add_raw_event(avg_vals(x_samples, NSAMPLE), avg_vals(y_samples, NSAMPLE), TOUCH_DOWN);
TIM_Cmd(TIM7, ENABLE);
touch_add_raw_event(avg_vals(x_samples, NSAMPLE), avg_vals(y_samples, NSAMPLE), TOUCH_DOWN); // Update position
//tft_draw_pixel(avg_vals(x_samples, NSAMPLE), avg_vals(y_samples, NSAMPLE), RED);
TIM_Cmd(TIM7, ENABLE); // Reenable timer
} else {
touch_add_raw_event(avg_vals(x_samples, NSAMPLE), avg_vals(y_samples, NSAMPLE), TOUCH_UP);
TIM_Cmd(TIM7, DISABLE);
touch_add_raw_event(avg_vals(x_samples, NSAMPLE), avg_vals(y_samples, NSAMPLE), TOUCH_UP); // Update position one last time
//tft_draw_pixel(avg_vals(x_samples, NSAMPLE), avg_vals(y_samples, NSAMPLE), RED);
TIM_Cmd(TIM7, DISABLE); // Disable timer
}
TIM_ClearFlag(TIM7, TIM_IT_Update);
TIM_ClearFlag(TIM7, TIM_IT_Update); // Clear timer interrupt flag
}
}