Files
433_STM32/Driver_RF433/Src/rf433_hal.c

510 lines
12 KiB
C
Raw Permalink Normal View History

/**
******************************************************************************
* @file rf433_hal.c
* @brief RF433硬件抽象层实现
* @note e32_hal.c重构
******************************************************************************
*/
#include "rf433_hal.h"
/* 与单片机平台相关 */
#include "main.h"
#include "gpio.h"
#include "usart.h"
/* ============================================================================
*
* ============================================================================ */
static bool rf433_hal_initialized = false;
/* FIFO缓冲区 */
static uint8_t rf433_fifo_buffer[1024];
static volatile uint32_t rf433_fifo_head = 0;
static volatile uint32_t rf433_fifo_tail = 0;
static volatile uint32_t rf433_fifo_count = 0;
#define RF433_FIFO_SIZE 1024
/* ============================================================================
* FIFO函数
* ============================================================================ */
/**
* @brief FIFO写入数据
*/
static rf433_hal_error_t rf433_fifo_write(const uint8_t *data, uint16_t length)
{
uint16_t i;
if (data == NULL || length == 0)
{
return RF433_HAL_ERROR_INVALID_PARAM;
}
for (i = 0; i < length; i++)
{
if (rf433_fifo_count >= RF433_FIFO_SIZE)
{
return RF433_HAL_ERROR;
}
rf433_fifo_buffer[rf433_fifo_head] = data[i];
rf433_fifo_head = (rf433_fifo_head + 1) % RF433_FIFO_SIZE;
rf433_fifo_count++;
}
return RF433_HAL_OK;
}
/**
* @brief FIFO读取数据
*/
static rf433_hal_error_t rf433_fifo_read(uint8_t *data, uint16_t length, uint16_t *actual_length)
{
uint16_t i;
if (data == NULL || length == 0 || actual_length == NULL)
{
return RF433_HAL_ERROR_INVALID_PARAM;
}
if (rf433_fifo_count == 0)
{
*actual_length = 0;
return RF433_HAL_ERROR;
}
*actual_length = 0;
for (i = 0; i < length && rf433_fifo_count > 0; i++)
{
data[i] = rf433_fifo_buffer[rf433_fifo_tail];
rf433_fifo_tail = (rf433_fifo_tail + 1) % RF433_FIFO_SIZE;
rf433_fifo_count--;
(*actual_length)++;
}
return RF433_HAL_OK;
}
/**
* @brief FIFO数据长度
*/
static rf433_hal_error_t rf433_fifo_get_length(uint16_t *length)
{
if (length == NULL)
{
return RF433_HAL_ERROR_INVALID_PARAM;
}
*length = rf433_fifo_count;
return RF433_HAL_OK;
}
/**
* @brief FIFO
*/
static rf433_hal_error_t rf433_fifo_clear(void)
{
rf433_fifo_head = 0;
rf433_fifo_tail = 0;
rf433_fifo_count = 0;
return RF433_HAL_OK;
}
/* UART接收相关变量 */
uint8_t rf433_uart_rx_tmp;
static volatile uint32_t rf433_uart_rx_timeout = 0;
static volatile bool rf433_uart_rx_done = false;
/* ============================================================================
*
* ============================================================================ */
/**
* @brief
*/
rf433_hal_error_t rf433_hal_init(void)
{
/* 检查是否已初始化 */
if (rf433_hal_initialized)
{
return RF433_HAL_ERROR;
}
/* 初始化FIFO */
rf433_fifo_head = 0;
rf433_fifo_tail = 0;
rf433_fifo_count = 0;
rf433_hal_initialized = true;
return RF433_HAL_OK;
}
/**
* @brief
*/
rf433_hal_error_t rf433_hal_deinit(void)
{
/* 检查是否已初始化 */
if (!rf433_hal_initialized)
{
return RF433_HAL_ERROR;
}
rf433_hal_initialized = false;
return RF433_HAL_OK;
}
/**
* @brief UART发送数据e32_hal_uart_tx
*/
rf433_hal_error_t rf433_hal_uart_tx(uint8_t *buffer, uint16_t length)
{
HAL_StatusTypeDef ret;
/* 参数检查 */
if (buffer == NULL || length == 0)
{
return RF433_HAL_ERROR_INVALID_PARAM;
}
/* 发送数据 */
ret = HAL_UART_Transmit(&huart1, buffer, length, 0xFFFF);
if (ret != HAL_OK)
{
return RF433_HAL_ERROR_TIMEOUT;
}
return RF433_HAL_OK;
}
/**
* @brief UART接收回调
*/
void rf433_hal_uart_rx_callback(uint8_t *data, uint16_t length)
{
/* 写入FIFO */
rf433_fifo_write(data, length);
/* 设置超时 */
rf433_uart_rx_timeout = 10;
}
/**
* @brief AUX引脚变为空闲e32_hal_aux_wait
*/
rf433_hal_error_t rf433_hal_aux_wait(void)
{
#if RF433_USE_GPIO_AUX
uint32_t start_time;
/* 等待AUX引脚变为高电平 */
if (HAL_GPIO_ReadPin(AUX_GPIO_Port, AUX_Pin) == GPIO_PIN_RESET)
{
/* 等到模块的AUX信号由忙变为空闲 */
start_time = HAL_GetTick();
while (HAL_GPIO_ReadPin(AUX_GPIO_Port, AUX_Pin) == GPIO_PIN_RESET)
{
/* 检查超时 */
if ((HAL_GetTick() - start_time) >= RF433_AUX_TIMEOUT)
{
return RF433_HAL_ERROR_TIMEOUT;
}
}
/* 此时是检测到AUX信号有上升沿需要再等待1~2ms */
HAL_Delay(2);
}
#else
/* 不使用AUX引脚使用延时等待 */
HAL_Delay(30);
#endif
return RF433_HAL_OK;
}
/**
* @brief e32_hal_work_mode
*/
rf433_hal_error_t rf433_hal_set_work_mode(rf433_work_mode_t mode)
{
rf433_hal_error_t ret;
#if RF433_USE_GPIO_AUX
/* 等待模块空闲 */
ret = rf433_hal_aux_wait();
if (ret != RF433_HAL_OK)
{
return ret;
}
#endif
/* 设置M0和M1引脚 */
switch (mode)
{
/* 模式0一般模式 (M0=0 M1=0) */
case RF433_WORK_MODE_TRANSPARENT:
HAL_GPIO_WritePin(M0_GPIO_Port, M0_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(M1_GPIO_Port, M1_Pin, GPIO_PIN_RESET);
break;
/* 模式1唤醒模式 (M0=1 M1=0) */
case RF433_WORK_MODE_WAKE_ON_RADIO_MASTER:
HAL_GPIO_WritePin(M0_GPIO_Port, M0_Pin, GPIO_PIN_SET);
HAL_GPIO_WritePin(M1_GPIO_Port, M1_Pin, GPIO_PIN_RESET);
break;
/* 模式2省电模式 (M0=0 M1=1) */
case RF433_WORK_MODE_WAKE_ON_RADIO_SLAVE:
HAL_GPIO_WritePin(M0_GPIO_Port, M0_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(M1_GPIO_Port, M1_Pin, GPIO_PIN_SET);
break;
/* 模式3配置模式 (M0=1 M1=1) */
case RF433_WORK_MODE_CONFIG_AND_SLEEP:
HAL_GPIO_WritePin(M0_GPIO_Port, M0_Pin, GPIO_PIN_SET);
HAL_GPIO_WritePin(M1_GPIO_Port, M1_Pin, GPIO_PIN_SET);
break;
default:
return RF433_HAL_ERROR_INVALID_PARAM;
}
#if RF433_USE_GPIO_AUX
/* 切换模式后模块的AUX信号不会立即变为低电平需要等待一段时间再进行检测 */
HAL_Delay(5);
ret = rf433_hal_aux_wait();
if (ret != RF433_HAL_OK)
{
return ret;
}
#else
/* 这里保留一定延时,确保模式切换完成 */
HAL_Delay(50);
#endif
return RF433_HAL_OK;
}
/**
* @brief e32_hal_reset
*/
rf433_hal_error_t rf433_hal_reset(void)
{
/* 拉低复位引脚 */
HAL_GPIO_WritePin(RESET_GPIO_Port, RESET_Pin, GPIO_PIN_RESET);
HAL_Delay(1);
/* 拉高复位引脚 */
HAL_GPIO_WritePin(RESET_GPIO_Port, RESET_Pin, GPIO_PIN_SET);
#if RF433_USE_GPIO_AUX
/* 注意硬件复位时可能会出现AUX引脚输出低电平需要等待一段时间再开启AUX检测 */
HAL_Delay(10);
return rf433_hal_aux_wait();
#else
/* E32-V2 (V8.2) 版本 */
HAL_Delay(30);
return RF433_HAL_OK;
#endif
}
/**
* @brief FIFO
*/
rf433_hal_error_t rf433_hal_fifo_write(const uint8_t *data, uint16_t length)
{
return rf433_fifo_write(data, length);
}
/**
* @brief FIFO
*/
rf433_hal_error_t rf433_hal_fifo_read(uint8_t *data, uint16_t length, uint16_t *actual_length)
{
return rf433_fifo_read(data, length, actual_length);
}
/**
* @brief FIFO数据长度
*/
rf433_hal_error_t rf433_hal_fifo_get_length(uint16_t *length)
{
return rf433_fifo_get_length(length);
}
/**
* @brief FIFO
*/
rf433_hal_error_t rf433_hal_fifo_clear(void)
{
return rf433_fifo_clear();
}
/**
* @brief 1ms定时器回调
*/
void rf433_hal_1ms_callback(void)
{
/* UART接收超时检测 */
if (rf433_uart_rx_timeout > 0)
{
rf433_uart_rx_timeout--;
if (rf433_uart_rx_timeout == 0)
{
rf433_uart_rx_done = true;
}
}
}
/* ============================================================================
* UART中断回调stm32f1xx_it.c中调用
* ============================================================================ */
/**
* @brief UART接收完成回调
* @note HAL_UART_RxCpltCallback中调用
*/
void rf433_hal_uart_rxcplt_callback(void)
{
uint8_t data;
/* 读取接收到的数据 */
data = huart1.Instance->DR;
/* 写入FIFO */
rf433_fifo_write(&data, 1);
/* 设置超时 */
rf433_uart_rx_timeout = 10;
/* 重新启动接收 */
HAL_UART_Receive_IT(&huart1, &rf433_uart_rx_tmp, 1);
}
/* ============================================================================
*
* ============================================================================ */
/**
* @brief UART接收超时1ms回调uart1_rx_timeout_1ms_callback
* @note 1ms定时器中断中调用
*/
void uart1_rx_timeout_1ms_callback(void)
{
/* 调用RF433模块的1ms回调 */
rf433_hal_1ms_callback();
}
/**
* @brief UART等待响应uart1_wait_response_blocked
* @param buffer
* @param length
* @note main.h中的声明保持一致void
*/
void uart1_wait_response_blocked(uint8_t *buffer, uint16_t *length)
{
uint32_t start_time;
uint16_t fifo_length;
rf433_hal_error_t ret;
/* 参数检查 */
if (buffer == NULL || length == NULL)
{
return;
}
/* 等待数据 */
start_time = HAL_GetTick();
while (true)
{
ret = rf433_hal_fifo_get_length(&fifo_length);
if (ret != RF433_HAL_OK)
{
return;
}
if (fifo_length > 0)
{
break;
}
/* 检查超时 */
if ((HAL_GetTick() - start_time) >= 1000)
{
return;
}
HAL_Delay(1);
}
/* 读取数据 */
ret = rf433_hal_fifo_read(buffer, 255, length);
if (ret != RF433_HAL_OK)
{
return;
}
}
/**
* @brief UART检查接收完成uart1_check_rx_done
* @param buffer
* @param length uint32_t*main.h中的声明保持一致
* @return true
* false
*/
bool uart1_check_rx_done(uint8_t *buffer, uint32_t *length)
{
rf433_hal_error_t ret;
uint16_t fifo_length;
/* 参数检查 */
if (buffer == NULL || length == NULL)
{
return false;
}
/* 检查超时标志 */
if (!rf433_uart_rx_done)
{
return false;
}
/* 获取FIFO长度 */
ret = rf433_hal_fifo_get_length(&fifo_length);
if (ret != RF433_HAL_OK)
{
return false;
}
/* 检查是否有数据 */
if (fifo_length == 0)
{
return false;
}
/* 读取数据 */
ret = rf433_hal_fifo_read(buffer, 255, (uint16_t*)length);
if (ret != RF433_HAL_OK)
{
return false;
}
/* 清除超时标志 */
rf433_uart_rx_done = false;
return true;
}
/**
* @brief RF433应用层
* @return true
* false
*/
bool rf433_hal_check_rx_done(void)
{
return rf433_uart_rx_done;
}