用keil5写一个用stm32f103c8t6驱动nrf905程序
时间: 2023-11-29 10:04:31 浏览: 71
主控芯片stm32f103c8t6 NRF24L01 使用IRQ处理收发中断,六发一收。。。。。。。。。
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好的,我可以为您提供一个基本的框架来驱动nrf905,以下是步骤:
1. 配置STM32的SPI接口
```c
void SPI1_Init(void) {
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_SPI1, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_SetBits(GPIOA, GPIO_Pin_4);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_Cmd(SPI1, ENABLE);
}
```
2. 写nrf905的初始化函数
```c
void NRF905_Init(void) {
GPIO_ResetBits(GPIOA, GPIO_Pin_4);
SPI_WriteByte(NRF905_CONFIG_WRITE);
SPI_WriteByte(0x00); // CH_NO
SPI_WriteByte(0x44); // CH_NO
SPI_WriteByte(0x20); // TX_ADR_WIDTH, 4 bytes
SPI_WriteByte(0x20); // RX_ADR_WIDTH, 4 bytes
SPI_WriteByte(0x00); // RX_PAYLOAD_WIDTH, 1 byte
SPI_WriteByte(0x00); // TX_PAYLOAD_WIDTH, 1 byte
SPI_WriteByte(0x20); // RX_ADDRESS, 0x11223344
SPI_WriteByte(0x33);
SPI_WriteByte(0x22);
SPI_WriteByte(0x11);
SPI_WriteByte(0x20); // TX_ADDRESS, 0x11223344
SPI_WriteByte(0x33);
SPI_WriteByte(0x22);
SPI_WriteByte(0x11);
SPI_WriteByte(0x00); // RX_PAYLOAD
SPI_WriteByte(0x00); // TX_PAYLOAD
SPI_WriteByte(0x08); // MODE, 433MHz, 8-bit CRC
GPIO_SetBits(GPIOA, GPIO_Pin_4);
}
```
3. 写数据发送函数
```c
void NRF905_SendData(uint8_t *data, uint8_t len) {
GPIO_ResetBits(GPIOA, GPIO_Pin_4);
SPI_WriteByte(NRF905_W_TX_PAYLOAD);
for (uint8_t i = 0; i < len; i++) {
SPI_WriteByte(data[i]);
}
GPIO_SetBits(GPIOA, GPIO_Pin_4);
GPIO_ResetBits(GPIOA, GPIO_Pin_4);
SPI_WriteByte(NRF905_W_TX_ADDRESS);
SPI_WriteByte(0x33);
SPI_WriteByte(0x22);
SPI_WriteByte(0x11);
SPI_WriteByte(0x20);
GPIO_SetBits(GPIOA, GPIO_Pin_4);
delay_ms(1);
GPIO_ResetBits(GPIOA, GPIO_Pin_4);
SPI_WriteByte(NRF905_W_CONFIG);
SPI_WriteByte(0x08); // TX mode
GPIO_SetBits(GPIOA, GPIO_Pin_4);
delay_ms(10);
GPIO_ResetBits(GPIOA, GPIO_Pin_4);
SPI_WriteByte(NRF905_W_CONFIG);
SPI_WriteByte(0x00); // Standby mode
GPIO_SetBits(GPIOA, GPIO_Pin_4);
}
```
4. 写数据接收函数
```c
void NRF905_RecvData(uint8_t *data, uint8_t len) {
GPIO_ResetBits(GPIOA, GPIO_Pin_4);
SPI_WriteByte(NRF905_R_RX_PAYLOAD);
for (uint8_t i = 0; i < len; i++) {
data[i] = SPI_ReadByte();
}
GPIO_SetBits(GPIOA, GPIO_Pin_4);
GPIO_ResetBits(GPIOA, GPIO_Pin_4);
SPI_WriteByte(NRF905_W_CONFIG);
SPI_WriteByte(0x00); // Standby mode
GPIO_SetBits(GPIOA, GPIO_Pin_4);
}
```
5. 在主函数中调用初始化函数并发送/接收数据
```c
int main(void) {
uint8_t data[10] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a};
uint8_t recv_data[10];
SPI1_Init();
NRF905_Init();
while (1) {
NRF905_SendData(data, 10);
delay_ms(1000);
NRF905_RecvData(recv_data, 10);
delay_ms(1000);
}
}
```
这是一个基本的nrf905驱动框架,您可以根据您的具体应用进行更改。需要注意的是,这只是一个示例,可能需要更改以适应您的硬件配置和应用程序需求。
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