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it works, needs ctr value

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jazz
2025-12-18 21:06:13 -06:00
parent 3c87175342
commit e468518b8c
7 changed files with 152 additions and 17 deletions
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68
Core/Src/main.c
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@@ -18,10 +18,12 @@
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f4xx_hal_tim.h"
#include "stm32f4xx_hal_uart.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdint.h>
#include <stdio.h>
/* USER CODE END Includes */
@@ -45,6 +47,8 @@ ADC_HandleTypeDef hadc1;
TIM_HandleTypeDef htim1;
UART_HandleTypeDef huart1;
/* USER CODE BEGIN PV */
uint16_t duty;
int ctr = 7999; // or 65534?
@@ -56,6 +60,7 @@ void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_ADC1_Init(void);
static void MX_TIM1_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
@@ -96,9 +101,10 @@ int main(void)
MX_GPIO_Init();
MX_ADC1_Init();
MX_TIM1_Init();
MX_USART1_UART_Init();
/* USER CODE BEGIN 2 */
uint16_t val_raw;
//float voltage;
float proc;
HAL_GPIO_WritePin(LED_ERR_GPIO_Port, LED_ERR_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(LED_ON_GPIO_Port, LED_ON_Pin, GPIO_PIN_SET);
@@ -117,14 +123,24 @@ int main(void)
val_raw = HAL_ADC_GetValue(&hadc1);
//duty = (((val_raw/4096)*ctr)/ctr)*100;
/*
* Mapping % of 4096 to % of counter value
* (i.e. 100/4096 --> 200/8912)
*/
proc = (float)val_raw / 4096;
proc *= ctr;
duty = (uint16_t)proc;
duty = 6000;
printf("duty:%u proc:%u raw:%u\r\n", duty, (uint16_t)proc, val_raw);
//printf("duty:%u raw:%u\r\n", duty, val_raw);
/* Cap it */
if (duty > ctr)
duty = ctr;
//duty = (uint16_t)(val_raw/4096);
__HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_4, duty);
HAL_Delay(500);
HAL_Delay(100);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
@@ -332,6 +348,39 @@ static void MX_TIM1_Init(void)
}
/**
* @brief USART1 Initialization Function
* @param None
* @retval None
*/
static void MX_USART1_UART_Init(void)
{
/* USER CODE BEGIN USART1_Init 0 */
/* USER CODE END USART1_Init 0 */
/* USER CODE BEGIN USART1_Init 1 */
/* USER CODE END USART1_Init 1 */
huart1.Instance = USART1;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART1_Init 2 */
/* USER CODE END USART1_Init 2 */
}
/**
* @brief GPIO Initialization Function
* @param None
@@ -364,6 +413,13 @@ static void MX_GPIO_Init(void)
}
/* USER CODE BEGIN 4 */
int
__io_putchar(int ch)
{
uint8_t c = ch;
HAL_UART_Transmit(&huart1, &c, 1, HAL_MAX_DELAY);
return ch;
}
/* USER CODE END 4 */