/*
* 函数：user_spi_read_byte
* 说明：SPI读取一个字节
*/
u8 ICACHE_FLASH_ATTR
user_spi_read_byte(void)
{
u8 read = 0;
#if defined(HARD_SPI)
u32 recv_data[1];
SpiData spiData;
spiData.cmd = MASTER_READ_DATA_FROM_SLAVE_CMD;
spiData.cmdLen = 0;
spiData.addr = NULL;
spiData.addrLen = 0;
spiData.data = recv_data;
spiData.dataLen = 1;
SPIMasterRecvData(SpiNum_HSPI, &spiData);
read = (u8)(recv_data[0]&0xFF);
#elif defined(SOFT_SPI)
u8 i;
CS_0();
for (i = 0; i < 8; i++){
SCK_0();
//user_spi_delay_us(50);
read = read<<1;
if (MISO_IS_HIGH()){
read++;
}
SCK_1();
//user_spi_delay_us(50);
}
CS_1();
#endif
return read;
}
/*
* 函数：user_spi_read_4byte
* 说明：SPI读取4个字节
*/
u32 ICACHE_FLASH_ATTR
user_spi_read_4byte(void)
{
u32 read;
#if defined(HARD_SPI)
u32 recv_data[1];
SpiData spiData;
spiData.cmd = MASTER_READ_DATA_FROM_SLAVE_CMD;
spiData.cmdLen = 0;
spiData.addr = NULL;
spiData.addrLen = 0;
spiData.data = recv_data;
spiData.dataLen = 4;
SPIMasterRecvData(SpiNum_HSPI, &spiData);
read = recv_data[0];
#elif defined(SOFT_SPI)
CS_0();
read = user_spi_read_byte();
read <<= 8;
read += user_spi_read_byte();
read <<= 8;
read += user_spi_read_byte();
read <<= 8;
read += user_spi_read_byte();
CS_1();
#endif
return read;
}
static uint8 fn_spi_read_byte(uint8 addr)
{
uint8 read_bytes;
os_printf("\r\n Master receive 24 bytes data from slave(8266)\r\n");
spiData.cmd = MASTER_READ_DATA_FROM_SLAVE_CMD;
spiData.cmdLen = 1;
spiData.addr = &addr;
spiData.addrLen = 1;
spiData.data = &read_bytes;
spiData.dataLen = 1;
SPIMasterRecvData(SpiNum_HSPI, &spiData);
os_printf("Recv Slave data0[0x%x]\r\n", read_bytes);
uint32 value = SPIMasterRecvStatus(SpiNum_HSPI);
os_printf("\r\n Master read slave(sx1278) status[0x%02x]\r\n", value);
SPIMasterSendStatus(SpiNum_HSPI, 0x99);
os_printf("\r\n Master write status[0x99] to slavue(8266).\r\n");
// SHOWSPIREG(SpiNum_HSPI);
#if 0
uint8 i, j;
j = 0;
for (i = 0; i < 8; i++)
{
RF_CKL_H;
j = (j << 1); // shift 1 place to the left or shift in 0
if (SX1278_SDO) // check to see if bit is high
{
j = j | 0x01; // if high, make bit high
}
// toggle clock high
RF_CKL_L; // toggle clock low
}
return j; // toggle clock low //
#endif
}
