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通过读取status register2 判断是否CMP被设置为1 UINT8 usiStatus2Read() { uint8_t volatile u8Val;
QSPI_ClearRxFIFO(QSPI_FLASH_PORT);
// /CS: active QSPI_SET_SS_LOW(QSPI_FLASH_PORT);
// send Command: 0x05, Read status register QSPI_WRITE_TX(QSPI_FLASH_PORT, 0x35);
// wait tx finish usiActive();
// read status QSPI_WRITE_TX(QSPI_FLASH_PORT, 0x00);
// wait tx finish usiActive();
// /CS: de-active QSPI_SET_SS_HIGH(QSPI_FLASH_PORT);
// skip first rx data u8Val = QSPI_READ_RX(QSPI_FLASH_PORT); u8Val = QSPI_READ_RX(QSPI_FLASH_PORT);
return u8Val; } 若设置为1，通过指令改写status register 2 int usiStatusWrite(UINT8 data) { // Write enable usiWriteEnable();
///////////////////////////////////////
// /CS: active QSPI_SET_SS_LOW(QSPI_FLASH_PORT);
// send Command: 0x01, Write status register QSPI_WRITE_TX(QSPI_FLASH_PORT, 0x01);
// wait tx finish usiActive();
// write status QSPI_WRITE_TX(QSPI_FLASH_PORT, data);
// wait tx finish usiActive();
// write status 2 QSPI_WRITE_TX(QSPI_FLASH_PORT, 0x02);
// wait tx finish usiActive();
// /CS: de-active QSPI_SET_SS_HIGH(QSPI_FLASH_PORT);
return Successful; }
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