sx1278驱动代码

以下是一个基于STM32的sx1278驱动代码示例：

#include "stm32f10x.h"
#include "sx1278.h"

#define SX1278_SPI                  SPI1
#define SX1278_SPI_PIN              GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7
#define SX1278_SPI_GPIO             GPIOA
#define SX1278_SPI_GPIO_CLK         RCC_APB2Periph_GPIOA
#define SX1278_SPI_CLK              RCC_APB2Periph_SPI1
#define SX1278_SPI_SCK_PIN          GPIO_Pin_5
#define SX1278_SPI_MISO_PIN         GPIO_Pin_6
#define SX1278_SPI_MOSI_PIN         GPIO_Pin_7
#define SX1278_SPI_NSS_PIN          GPIO_Pin_4
#define SX1278_SPI_NSS_GPIO         GPIOA
#define SX1278_SPI_NSS_GPIO_CLK     RCC_APB2Periph_GPIOA
#define SX1278_SPI_NSS_H()          GPIO_SetBits(SX1278_SPI_NSS_GPIO, SX1278_SPI_NSS_PIN)
#define SX1278_SPI_NSS_L()          GPIO_ResetBits(SX1278_SPI_NSS_GPIO, SX1278_SPI_NSS_PIN)

void SX1278_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    SPI_InitTypeDef SPI_InitStructure;
    
    RCC_APB2PeriphClockCmd(SX1278_SPI_GPIO_CLK | SX1278_SPI_CLK, ENABLE);
    
    GPIO_InitStructure.GPIO_Pin = SX1278_SPI_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(SX1278_SPI_GPIO, &GPIO_InitStructure);
    
    GPIO_InitStructure.GPIO_Pin = SX1278_SPI_NSS_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(SX1278_SPI_NSS_GPIO, &GPIO_InitStructure);
    SX1278_SPI_NSS_H();
    
    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_8;
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
    SPI_InitStructure.SPI_CRCPolynomial = 7;
    SPI_Init(SX1278_SPI, &SPI_InitStructure);
    SPI_Cmd(SX1278_SPI, ENABLE);
    
    SX1278_Reset();
    SX1278_Write(REG_OPMODE, 0x00);
    SX1278_Write(REG_OPMODE, 0x01);
    SX1278_Write(REG_FRFMSB, 0xD9);
    SX1278_Write(REG_FRFMID, 0x00);
    SX1278_Write(REG_FRFLSB, 0x00);
    SX1278_Write(REG_LNA, 0x23);
    SX1278_Write(REG_RXCONFIG, 0x1E);
    SX1278_Write(REG_RSSICONFIG, 0xD2);
    SX1278_Write(REG_PREAMBLEMSB, 0x00);
    SX1278_Write(REG_PREAMBLELSB, 0x08);
    SX1278_Write(REG_SYNCCONFIG, 0x01);
    SX1278_Write(REG_SYNCVALUE1, 0xC1);
    SX1278_Write(REG_SYNCVALUE2, 0x94);
    SX1278_Write(REG_SYNCVALUE3, 0xC1);
    SX1278_Write(REG_MAXPAYLOADLENGTH, 0x80);
    SX1278_Write(REG_PAYLOADLENGTH, 0x0B);
    SX1278_Write(REG_FIFOTHRESH, 0x8F);
    SX1278_Write(REG_PACKETCONFIG1, 0x10);
    SX1278_Write(REG_PACKETCONFIG2, 0x00);
    SX1278_Write(REG_DETECTOPTIMIZE, 0x43);
    SX1278_Write(REG_INVERTIQ, 0x67);
    SX1278_Write(REG_DETECTIONTHRESHOLD, 0x0A);
    SX1278_Write(REG_SYNCWORD, 0x12);
}

void SX1278_Reset(void)
{
    SX1278_Write(REG_OPMODE, 0x80);
    Delay_ms(100);
    SX1278_Write(REG_OPMODE, 0x00);
    Delay_ms(100);
}

uint8_t SX1278_Read(uint8_t addr)
{
    uint8_t tmp;
    SX1278_SPI_NSS_L();
    SPI_I2S_SendData(SX1278_SPI, addr & 0x7F);
    while(SPI_I2S_GetFlagStatus(SX1278_SPI, SPI_I2S_FLAG_RXNE) == RESET);
    tmp = SPI_I2S_ReceiveData(SX1278_SPI);
    SPI_I2S_SendData(SX1278_SPI, 0x00);
    while(SPI_I2S_GetFlagStatus(SX1278_SPI, SPI_I2S_FLAG_RXNE) == RESET);
    tmp = SPI_I2S_ReceiveData(SX1278_SPI);
    SX1278_SPI_NSS_H();
    return tmp;
}

void SX1278_Write(uint8_t addr, uint8_t value)
{
    SX1278_SPI_NSS_L();
    SPI_I2S_SendData(SX1278_SPI, addr | 0x80);
    while(SPI_I2S_GetFlagStatus(SX1278_SPI, SPI_I2S_FLAG_RXNE) == RESET);
    SPI_I2S_ReceiveData(SX1278_SPI);
    SPI_I2S_SendData(SX1278_SPI, value);
    while(SPI_I2S_GetFlagStatus(SX1278_SPI, SPI_I2S_FLAG_RXNE) == RESET);
    SPI_I2S_ReceiveData(SX1278_SPI);
    SX1278_SPI_NSS_H();
}

需要注意的是，此处只是sx1278驱动代码的一部分，具体的实现还需要根据实际情况进行修改和完善。