TuxMonkey/bf_original_balance_chassis
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Correct spi chip selection

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This commit is contained in:
chenfu
2023-12-23 11:09:36 +08:00
parent b052126648
commit 9dd0057563
8 changed files with 125 additions and 110 deletions
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40
bsp/spi/bsp_spi.c
View File

@@ -4,7 +4,8 @@
/* 所有的spi instance保存于此,用于callback时判断中断来源*/
static SPIInstance *spi_instance[SPI_DEVICE_CNT] = {NULL};
static uint8_t idx = 0; // 配合中断以及初始化
static uint8_t idx = 0; // 配合中断以及初始化
uint8_t SPIDeviceOnGoing[SPI_DEVICE_CNT] = {1}; // 用于判断当前spi是否正在传输,防止多个模块同时使用一个spi总线 (0: 正在传输, 1: 未传输)
SPIInstance *SPIRegister(SPI_Init_Config_s *conf)
{
@@ -20,7 +21,19 @@ SPIInstance *SPIRegister(SPI_Init_Config_s *conf)
instance->spi_work_mode = conf->spi_work_mode;
instance->callback = conf->callback;
instance->id = conf->id;
if (instance->spi_handle->Instance == SPI1)
{
instance->cs_pin_state = &SPIDeviceOnGoing[0];
}
else if (instance->spi_handle->Instance == SPI2)
{
instance->cs_pin_state = &SPIDeviceOnGoing[1];
}
else
{
while (1)
;
}
spi_instance[idx++] = instance;
return instance;
}
@@ -78,11 +91,28 @@ void SPIRecv(SPIInstance *spi_ins, uint8_t *ptr_data, uint8_t len)
void SPITransRecv(SPIInstance *spi_ins, uint8_t *ptr_data_rx, uint8_t *ptr_data_tx, uint8_t len)
{
// 用于稍后回调使用,请保证ptr_data_rx在回调函数被调用之前仍然在作用域内,否则析构之后的行为是未定义的!!!
spi_ins->rx_size = len;
spi_ins->rx_buffer = ptr_data_rx;
// 等待上一次传输完成
if (spi_ins->spi_handle->Instance == SPI1)
{
while (!SPIDeviceOnGoing[0])
{
};
}
else if (spi_ins->spi_handle->Instance == SPI2)
{
while (!SPIDeviceOnGoing[1])
{
};
}
// 拉低片选,开始传输
HAL_GPIO_WritePin(spi_ins->GPIOx, spi_ins->cs_pin, GPIO_PIN_RESET);
*spi_ins->cs_pin_state =
spi_ins->CS_State =
HAL_GPIO_ReadPin(spi_ins->GPIOx, spi_ins->cs_pin);
switch (spi_ins->spi_work_mode)
{
case SPI_DMA_MODE:
@@ -95,6 +125,9 @@ void SPITransRecv(SPIInstance *spi_ins, uint8_t *ptr_data_rx, uint8_t *ptr_data_
HAL_SPI_TransmitReceive(spi_ins->spi_handle, ptr_data_tx, ptr_data_rx, len, 1000); // 默认50ms超时
// 阻塞模式不会调用回调函数,传输完成后直接拉高片选结束
HAL_GPIO_WritePin(spi_ins->GPIOx, spi_ins->cs_pin, GPIO_PIN_SET);
*spi_ins->cs_pin_state =
spi_ins->CS_State =
HAL_GPIO_ReadPin(spi_ins->GPIOx, spi_ins->cs_pin);
break;
default:
while (1)
@@ -130,6 +163,9 @@ void HAL_SPI_RxCpltCallback(SPI_HandleTypeDef *hspi)
{
// 先拉高片选,结束传输,在判断是否有回调函数,如果有则调用回调函数
HAL_GPIO_WritePin(spi_instance[i]->GPIOx, spi_instance[i]->cs_pin, GPIO_PIN_SET);
*spi_instance[i]->cs_pin_state =
spi_instance[i]->CS_State =
HAL_GPIO_ReadPin(spi_instance[i]->GPIOx, spi_instance[i]->cs_pin);
// @todo 后续添加holdon模式,由用户自行决定何时释放片选,允许进行连续传输
if (spi_instance[i]->callback != NULL) // 回调函数不为空, 则调用回调函数
spi_instance[i]->callback(spi_instance[i]);

3
bsp/spi/bsp_spi.h
View File

@@ -24,7 +24,8 @@ typedef struct spi_ins_temp
SPI_TXRX_MODE_e spi_work_mode; // 传输工作模式
uint8_t rx_size; // 本次接收的数据长度
uint8_t *rx_buffer; // 本次接收的数据缓冲区
uint8_t CS_State; // 片选信号状态,用于中断模式下的片选控制
uint8_t * cs_pin_state; // 片选信号状态,用于中断模式下的片选控制
void (*callback)(struct spi_ins_temp *); // 接收回调函数
void *id; // 模块指针
} SPIInstance;