代码实现使用I2C通信将TMP102温度传感器与NUCLEO L432KC嵌入式板接口,读取和平均温度值、启用关机和睡眠模式、测量电流和实现外部中断
时间: 2024-04-30 17:21:56 浏览: 18
以下是使用STM32CubeIDE编写的示例代码:
```c
#include "stm32l4xx_hal.h"
#include "stdio.h"
/* Define I2C interface */
#define I2C_HANDLER hi2c1
#define I2C_ADDRESS 0x48
/* Define TMP102 registers */
#define TEMP_REGISTER 0x00
#define CONFIG_REGISTER 0x01
/* Define TMP102 configuration bits */
#define SHUTDOWN_BIT 0x0100
#define SLEEP_BIT 0x0400
/* Define ADC interface */
#define ADC_HANDLER hadc1
/* Define ADC channel */
#define ADC_CHANNEL ADC_CHANNEL_5
/* Define external interrupt pin */
#define EXTI_PIN GPIO_PIN_0
#define EXTI_PORT GPIOA
/* Define external interrupt handler */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if (GPIO_Pin == EXTI_PIN)
{
// Handle external interrupt
}
}
int main(void)
{
HAL_Init();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_I2C1_CLK_ENABLE();
__HAL_RCC_ADC_CLK_ENABLE();
/* Initialize I2C interface */
I2C_HandleTypeDef hi2c1;
hi2c1.Instance = I2C1;
hi2c1.Init.Timing = 0x00C0EAFF;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
/* Initialize ADC interface */
ADC_HandleTypeDef hadc1;
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.ScanConvMode = DISABLE;
hadc1.Init.ContinuousConvMode = DISABLE;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.NbrOfConversion = 1;
hadc1.Init.DMAContinuousRequests = DISABLE;
hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
/* Configure GPIO pin for external interrupt */
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.Pin = EXTI_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(EXTI_PORT, &GPIO_InitStruct);
/* Enable external interrupt */
HAL_NVIC_SetPriority(EXTI0_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(EXTI0_IRQn);
/* Enable ADC channel */
ADC_ChannelConfTypeDef sConfig;
sConfig.Channel = ADC_CHANNEL;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_640CYCLES;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* Configure TMP102 */
uint8_t config[2];
config[0] = CONFIG_REGISTER;
config[1] = SHUTDOWN_BIT | SLEEP_BIT;
if (HAL_I2C_Master_Transmit(&I2C_HANDLER, I2C_ADDRESS, (uint8_t *)config, 2, HAL_MAX_DELAY) != HAL_OK)
{
Error_Handler();
}
/* Read temperature from TMP102 */
uint8_t temp_reg[2];
temp_reg[0] = TEMP_REGISTER;
uint16_t temp_raw;
if (HAL_I2C_Master_Transmit(&I2C_HANDLER, I2C_ADDRESS, (uint8_t *)temp_reg, 1, HAL_MAX_DELAY) != HAL_OK)
{
Error_Handler();
}
if (HAL_I2C_Master_Receive(&I2C_HANDLER, I2C_ADDRESS, (uint8_t *)&temp_raw, 2, HAL_MAX_DELAY) != HAL_OK)
{
Error_Handler();
}
float temperature = (float)((int16_t)temp_raw >> 4) * 0.0625;
/* Read ADC value */
if (HAL_ADC_Start(&ADC_HANDLER) != HAL_OK)
{
Error_Handler();
}
if (HAL_ADC_PollForConversion(&ADC_HANDLER, HAL_MAX_DELAY) != HAL_OK)
{
Error_Handler();
}
uint16_t adc_value = HAL_ADC_GetValue(&ADC_HANDLER);
/* Average temperature and ADC value */
float temperature_sum = 0;
uint32_t adc_sum = 0;
for (int i = 0; i < 10; i++)
{
/* Read temperature from TMP102 */
if (HAL_I2C_Master_Transmit(&I2C_HANDLER, I2C_ADDRESS, (uint8_t *)temp_reg, 1, HAL_MAX_DELAY) != HAL_OK)
{
Error_Handler();
}
if (HAL_I2C_Master_Receive(&I2C_HANDLER, I2C_ADDRESS, (uint8_t *)&temp_raw, 2, HAL_MAX_DELAY) != HAL_OK)
{
Error_Handler();
}
temperature_sum += (float)((int16_t)temp_raw >> 4) * 0.0625;
/* Read ADC value */
if (HAL_ADC_Start(&ADC_HANDLER) != HAL_OK)
{
Error_Handler();
}
if (HAL_ADC_PollForConversion(&ADC_HANDLER, HAL_MAX_DELAY) != HAL_OK)
{
Error_Handler();
}
adc_sum += HAL_ADC_GetValue(&ADC_HANDLER);
}
float average_temperature = temperature_sum / 10;
uint32_t average_adc_value = adc_sum / 10;
/* Enter sleep mode */
HAL_PWR_EnableSleepOnExit();
HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
while (1)
{
/* Main loop */
}
}
```
这个示例代码使用STM32CubeIDE开发工具编写,用于读取TMP102温度传感器和ADC电流传感器的值,并实现了外部中断。首先,我们初始化了I2C和ADC的接口,并配置了GPIO引脚用于外部中断。然后,我们配置了TMP102,以便在读取温度值之前将其置于关机和睡眠模式。接下来,我们读取了一次温度值和ADC值,并对它们进行平均化。最后,我们进入了睡眠模式,直到外部中断触发为止。