C++ (Cpp) W5100_CS_ENABLE示例

示例#1

文件： w5100.c 项目： appserver/mcuoneclipse

uint8_t W5100_MemReadWord(uint16_t addr, uint16_t *val) {
  uint8_t low, high;
  
  W5100_RequestSPIBus();

  W5100_CS_ENABLE();
  SPIWriteByte(W5100_CMD_READ);
  SPIWriteByte(addr>>8); /* high address */
  SPIWriteByte(addr&0xff); /* low address */
  high = SPIReadByte(); /* data */
  W5100_CS_DISABLE();
  
  addr++;
  W5100_CS_ENABLE();
  SPIWriteByte(W5100_CMD_READ);
  SPIWriteByte(addr>>8); /* high address */
  SPIWriteByte(addr&0xff); /* low address */
  low = SPIReadByte(); /* data */
  W5100_CS_DISABLE();
  
  W5100_ReleaseSPIBus();
  
  *val = (high<<8)|low;
  return ERR_OK;
}

示例#2

文件： w5100.c 项目： 210221030/mcuoneclipse

uint8_t W5100_MemReadByte(uint16_t addr, uint8_t *val) {
  SPI_RequestSPIBus();
  W5100_CS_ENABLE();
  SPI_WriteByte(W5100_CMD_READ);
  SPI_WriteByte(addr>>8); /* high address */
  SPI_WriteByte(addr&0xff); /* low address */
  *val = SPI_ReadByte(); /* data */
  W5100_CS_DISABLE();
  SPI_ReleaseSPIBus();
  return ERR_OK;
}

示例#3

文件： w5100.c 项目： appserver/mcuoneclipse

uint8_t W5100_MemWriteWord(uint16_t addr, uint16_t val) {
  W5100_RequestSPIBus();

  W5100_CS_ENABLE();
  SPIWriteByte(W5100_CMD_WRITE);
  SPIWriteByte(addr>>8); /* high address */
  SPIWriteByte(addr&0xff); /* low address */
  SPIWriteByte(val>>8); /* data */
  W5100_CS_DISABLE();

  addr++;
  W5100_CS_ENABLE();
  SPIWriteByte(W5100_CMD_WRITE);
  SPIWriteByte(addr>>8); /* high address */
  SPIWriteByte(addr&0xff); /* low address */
  SPIWriteByte(val&0xff); /* data */
  W5100_CS_DISABLE();

  W5100_ReleaseSPIBus();
  return ERR_OK;
}

示例#4

文件： w5100.c 项目： appserver/mcuoneclipse

void W5100_GetBus(void) {
  W5100_RequestSPIBus();
  W5100_CS_ENABLE();
}