帮我写一段基于stm32发了03c8t6的nrf24l01的底层驱动代码
时间: 2023-03-25 08:03:07 浏览: 151
好的,我可以回答这个问题。以下是基于stm32发了03c8t6的nrf24l01的底层驱动代码:
#include "stm32f10x.h"
#include "nrf24l01.h"
void nrf24l01_init(void)
{
// 初始化SPI接口
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_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_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
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_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
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);
// 初始化nRF24L01
nrf24l01_CE_LOW();
nrf24l01_CSN_HIGH();
nrf24l01_write_register(NRF24L01_REG_CONFIG, xA);
nrf24l01_write_register(NRF24L01_REG_EN_AA, x01);
nrf24l01_write_register(NRF24L01_REG_EN_RXADDR, x01);
nrf24l01_write_register(NRF24L01_REG_SETUP_AW, x03);
nrf24l01_write_register(NRF24L01_REG_SETUP_RETR, x03);
nrf24l01_write_register(NRF24L01_REG_RF_CH, x4C);
nrf24l01_write_register(NRF24L01_REG_RF_SETUP, x06);
nrf24l01_write_register(NRF24L01_REG_STATUS, x70);
nrf24l01_flush_tx();
nrf24l01_flush_rx();
}
void nrf24l01_CE_HIGH(void)
{
GPIO_SetBits(GPIOA, GPIO_Pin_4);
}
void nrf24l01_CE_LOW(void)
{
GPIO_ResetBits(GPIOA, GPIO_Pin_4);
}
void nrf24l01_CSN_HIGH(void)
{
GPIO_SetBits(GPIOA, GPIO_Pin_3);
}
void nrf24l01_CSN_LOW(void)
{
GPIO_ResetBits(GPIOA, GPIO_Pin_3);
}
uint8_t nrf24l01_read_register(uint8_t reg)
{
uint8_t value;
nrf24l01_CSN_LOW();
SPI1->DR = reg & x1F;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
value = SPI1->DR;
SPI1->DR = xFF;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
value = SPI1->DR;
nrf24l01_CSN_HIGH();
return value;
}
void nrf24l01_write_register(uint8_t reg, uint8_t value)
{
nrf24l01_CSN_LOW();
SPI1->DR = reg | x20;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
SPI1->DR = value;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
SPI1->DR;
nrf24l01_CSN_HIGH();
}
void nrf24l01_read_payload(uint8_t *data, uint8_t len)
{
nrf24l01_CSN_LOW();
SPI1->DR = NRF24L01_CMD_R_RX_PAYLOAD;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
SPI1->DR = xFF;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
for (uint8_t i = ; i < len; i++) {
SPI1->DR = xFF;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
data[i] = SPI1->DR;
}
nrf24l01_CSN_HIGH();
}
void nrf24l01_write_payload(uint8_t *data, uint8_t len)
{
nrf24l01_CSN_LOW();
SPI1->DR = NRF24L01_CMD_W_TX_PAYLOAD;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
SPI1->DR = xFF;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
for (uint8_t i = ; i < len; i++) {
SPI1->DR = data[i];
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
SPI1->DR;
}
nrf24l01_CE_HIGH();
nrf24l01_CSN_HIGH();
}
void nrf24l01_flush_tx(void)
{
nrf24l01_CSN_LOW();
SPI1->DR = NRF24L01_CMD_FLUSH_TX;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
SPI1->DR;
nrf24l01_CSN_HIGH();
}
void nrf24l01_flush_rx(void)
{
nrf24l01_CSN_LOW();
SPI1->DR = NRF24L01_CMD_FLUSH_RX;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
SPI1->DR;
nrf24l01_CSN_HIGH();
}
uint8_t nrf24l01_get_status(void)
{
uint8_t status;
nrf24l01_CSN_LOW();
SPI1->DR = NRF24L01_CMD_NOP;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
SPI1->DR = xFF;
while (!(SPI1->SR & SPI_I2S_FLAG_TXE));
while (!(SPI1->SR & SPI_I2S_FLAG_RXNE));
status = SPI1->DR;
nrf24l01_CSN_HIGH();
return status;
}