使用fpga驱动ds18b20进行测温并将温度数据存储在寄存器中,然后stm32通过spi读取温度数据
时间: 2024-06-04 07:12:31 浏览: 16
实现这个功能需要以下步骤:
1. 硬件连接:将FPGA和DS18B20连接起来,可以参考DS18B20的数据手册。同时,将FPGA和STM32通过SPI接口连接起来。
2. FPGA驱动DS18B20:使用FPGA的GPIO口对DS18B20进行控制,主要包括复位、写指令、读数据等操作。具体可以参考DS18B20的数据手册和FPGA的开发文档。
3. 将温度数据存储在寄存器中:FPGA可以使用内部的寄存器来存储温度数据,具体实现可以参考FPGA的开发文档。
4. STM32通过SPI读取温度数据:STM32可以使用SPI接口向FPGA发送读取温度数据的命令,然后通过SPI接收数据的方式获取温度数据。具体实现可以参考STM32的开发文档和SPI的通信协议。
需要注意的是,DS18B20是一种数字温度传感器,可以通过一条总线进行通信,但是通信协议比较复杂,需要对其进行详细的了解和掌握。同时,FPGA和STM32的开发也需要一定的基础知识和经验。
相关问题
stm32f103c8t6读取ds18b20的温度并将温度信息传输给总线
以下是基于STM32F103C8T6的HAL库的代码示例,实现DS18B20的温度读取并将温度信息通过USART串口传输给上位机。
```C
#include "stm32f1xx_hal.h"
#include "main.h"
#include <stdio.h>
#define DS18B20_GPIO GPIOB
#define DS18B20_PIN GPIO_PIN_12
float temperature = 0.0f;
uint8_t buffer[50];
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
void DS18B20_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
__HAL_RCC_GPIOB_CLK_ENABLE();
GPIO_InitStruct.Pin = DS18B20_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(DS18B20_GPIO, &GPIO_InitStruct);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_SET);
HAL_Delay(500);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_RESET);
HAL_Delay(500);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_SET);
HAL_Delay(50);
HAL_GPIO_ReadPin(DS18B20_GPIO, DS18B20_PIN);
HAL_Delay(500);
}
void DS18B20_Read_Temperature(void)
{
uint8_t data[2];
uint16_t raw_temp;
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_RESET);
HAL_Delay(2);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_SET);
HAL_Delay(15);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_RESET);
HAL_Delay(2);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_SET);
HAL_Delay(60);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_RESET);
HAL_Delay(2);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_SET);
HAL_Delay(10);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_RESET);
HAL_Delay(2);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_SET);
HAL_Delay(10);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_RESET);
HAL_Delay(2);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_SET);
HAL_Delay(15);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_RESET);
HAL_Delay(2);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_SET);
HAL_Delay(10);
HAL_GPIO_ReadPin(DS18B20_GPIO, DS18B20_PIN);
HAL_Delay(100);
HAL_GPIO_ReadPin(DS18B20_GPIO, DS18B20_PIN);
HAL_Delay(2);
HAL_GPIO_ReadPin(DS18B20_GPIO, DS18B20_PIN);
HAL_Delay(2);
HAL_GPIO_ReadPin(DS18B20_GPIO, DS18B20_PIN);
HAL_Delay(2);
HAL_GPIO_ReadPin(DS18B20_GPIO, DS18B20_PIN);
HAL_Delay(2);
data[0] = 0xBE;
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_RESET);
HAL_Delay(2);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_SET);
HAL_Delay(10);
HAL_GPIO_WritePin(DS18B20_GPIO, DS18B20_PIN, GPIO_PIN_RESET);
HAL_Delay(2);
HAL_UART_Transmit(&huart1, data, 1, 100);
HAL_UART_Receive(&huart1, data, 2, 100);
raw_temp = (data[1] << 8) | data[0];
temperature = (float)raw_temp * 0.0625f;
}
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_USART1_UART_Init();
while (1)
{
DS18B20_Init();
DS18B20_Read_Temperature();
sprintf((char*)buffer, "Temperature: %.2f C\r\n", temperature);
HAL_UART_Transmit(&huart1, buffer, strlen((char*)buffer), 100);
HAL_Delay(1000);
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = 16;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL12;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
{
Error_Handler();
}
}
static void MX_USART1_UART_Init(void)
{
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();
}
}
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
__HAL_RCC_GPIOB_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_12;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
__HAL_RCC_USART1_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_9;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
void Error_Handler(void)
{
while (1)
{
}
}
```
代码中,DS18B20_Read_Temperature函数用于读取DS18B20的温度值,并将温度值通过USART串口传输给上位机。在主函数中,通过调用DS18B20_Init和DS18B20_Read_Temperature函数,不断读取DS18B20的温度值并传输给上位机。
stm32f103c8t6读取ds18b20的温度并将温度信息传输给I2C总线库函数代码
以下是基于STM32 HAL库实现的读取DS18B20温度并将温度信息通过I2C总线传输的代码:
```c
#include "main.h"
#include "stm32f1xx_hal.h"
#include "ds18b20.h"
#include "i2c.h"
/* DS18B20引脚定义 */
#define DS18B20_GPIO_PORT GPIOA
#define DS18B20_GPIO_PIN GPIO_PIN_1
/* I2C设备地址 */
#define I2C_DEVICE_ADDRESS 0x50
/* 定义I2C发送和接收缓冲区 */
uint8_t txBuffer[2];
uint8_t rxBuffer[2];
void SystemClock_Config(void);
int main(void)
{
/* MCU初始化 */
HAL_Init();
SystemClock_Config();
/* I2C初始化 */
MX_I2C1_Init();
/* DS18B20初始化 */
ds18b20_init(DS18B20_GPIO_PORT, DS18B20_GPIO_PIN);
while (1)
{
float temperature = ds18b20_get_temperature(DS18B20_GPIO_PORT, DS18B20_GPIO_PIN);
/* 将温度转换为两个字节的数据 */
uint16_t tempData = (uint16_t)(temperature * 10);
txBuffer[0] = tempData >> 8;
txBuffer[1] = tempData & 0xFF;
/* 发送温度数据到I2C */
HAL_I2C_Master_Transmit(&hi2c1, I2C_DEVICE_ADDRESS, txBuffer, 2, HAL_MAX_DELAY);
/* 等待I2C传输完成 */
HAL_Delay(1000);
}
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
| RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
```
需要注意的是,该代码使用了自定义的DS18B20库文件(ds18b20.h和ds18b20.c),需要在项目中添加这两个文件。
同时,需要在CubeMX中配置I2C的GPIO引脚和时钟,并生成代码。
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