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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <math.h>
#include "stm32f4xx_conf.h"
/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "timers.h"
#include "semphr.h"
#include "temperature.h"
#include "debug.h"
ADC_InitTypeDef ADC_InitStruct;
ADC_CommonInitTypeDef ADC_CommonInitStruct;
// Private variables
volatile uint32_t time_var1, time_var2;
// Private function prototypes
void init();
// Tasks
static void detect_button_press(void *pvParameters);
static void update_temperature(void *pvParameters);
void vApplicationStackOverflowHook( TaskHandle_t xTask,
signed char *pcTaskName )
{
while (1) {};
}
extern void initialise_monitor_handles(void);
int main(void) {
init();
xTaskCreate(
detect_button_press,
"TaskButton",
4*configMINIMAL_STACK_SIZE,
(void*) NULL,
tskIDLE_PRIORITY + 2UL,
NULL);
xTaskCreate(
update_temperature,
"TaskAudio",
configMINIMAL_STACK_SIZE,
(void*) NULL,
tskIDLE_PRIORITY + 2UL,
NULL);
/* Start the RTOS Scheduler */
vTaskStartScheduler();
/* HALT */
while(1);
}
static void detect_button_press(void *pvParameters)
{
GPIO_SetBits(GPIOD, GPIO_Pin_12);
while (1) {
if (GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_0)>0) {
while (GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_0) > 0) {
vTaskDelay(pdMS_TO_TICKS(100)); /* Button Debounce Delay */
}
GPIO_ResetBits(GPIOD, GPIO_Pin_12);
GPIO_SetBits(GPIOD, GPIO_Pin_15);
debug_print("Le jeu. Temp is: ");
char t[32];
// For debugging purposes only. snprinf has issues with %f
snprintf(t, 32, "%d.%02d", (int)temperature_get(), (int)(temperature_get() * 100.0 - (int)(temperature_get()) * 100.0));
debug_print(t);
debug_print("\n");
GPIO_ResetBits(GPIOD, GPIO_Pin_15);
GPIO_SetBits(GPIOD, GPIO_Pin_12);
while (GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_0) == 0) {
vTaskDelay(pdMS_TO_TICKS(100)); /* Button Debounce Delay */
}
}
taskYIELD();
}
}
static void update_temperature(void *pvParameters)
{
while (1) {
vTaskDelay(pdMS_TO_TICKS(1000));
GPIO_SetBits(GPIOD, GPIO_Pin_13);
temperature_update();
GPIO_ResetBits(GPIOD, GPIO_Pin_13);
taskYIELD();
}
}
void init() {
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
// ---------- SysTick timer -------- //
if (SysTick_Config(SystemCoreClock / 1000)) {
// Capture error
while (1){};
}
// Enable full access to FPU (Should be done automatically in system_stm32f4xx.c):
//SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); // set CP10 and CP11 Full Access
// GPIOD Periph clock enable
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
// Configure PD12, PD13, PD14 and PD15 in output pushpull mode
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13| GPIO_Pin_14| GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
// Init PushButton
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// ------ UART ------ //
// Clock
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
// IO
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource5, GPIO_AF_USART1);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource6, GPIO_AF_USART1);
// Conf
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
USART_Init(USART2, &USART_InitStructure);
// Enable
USART_Cmd(USART2, ENABLE);
// Temperature using ADC
// Enable ADC clock
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
// Init ADC
ADC_CommonInitStruct.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStruct.ADC_Prescaler = ADC_Prescaler_Div8;
ADC_CommonInitStruct.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStruct.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStruct);
ADC_InitStruct.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStruct.ADC_ScanConvMode = DISABLE;
ADC_InitStruct.ADC_ContinuousConvMode = ENABLE;
ADC_InitStruct.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStruct.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStruct.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStruct.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStruct);
// Configure ADC1 to use temperture sensor
ADC_RegularChannelConfig(ADC1, ADC_Channel_TempSensor, 1, ADC_SampleTime_144Cycles);
// Enable temperature sensor
ADC_TempSensorVrefintCmd(ENABLE);
// Enable ADC
ADC_Cmd(ADC1, ENABLE);
}
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