[参考译文] TMS320F2800157：向 SPI EEPROM 发送 24 位地址

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https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1614038/tms320f2800157-sending-24-bit-address-to-spi-eeprom

器件型号： TMS320F2800157
主题： C2000WARE 中讨论的其他器件

您好、

我使用 C2000Ware 5.04 中的 SPI EEPROM 示例 开发以下代码、以便从使用 24 位寻址的 EEPROM 中读取数据。  下面的代码发送 24 位地址、但如果我尝试寻址超过 255（8 位）的任何地址、SPI 总线上的位模式不正确（从示波器查看）、我收到错误。

任何见解都将有帮助！

// Function to read data from the EEPROM
// - address is the byte address of the EEPROM
// - data is a pointer to an array of data being received
// - length is the number of characters in the array to receive
void PR_ReadData(uint32_t address, uint16_t *data, uint16_t length, uint16_t txdly)
{
     uint32_t RXdata = 0;
     CS_LOW;

    // Send the READ opcode.
    SPI_transmitByte(SPIA_BASE, READ);

    // Send EEPROM 24bit address to write data
    SPI_transmitByte(SPIA_BASE, address>>16);
    SPI_transmitByte(SPIA_BASE, address>>8);
    SPI_transmitByte(SPIA_BASE, address);

    // Receive length number of bytes
    SPI_receiveNBytes(SPIA_BASE, data, length, txdly);

     CS_HIGH;
}