增加IAP功能，准备测试上位机升级

jinlicong

2024-06-12 f03cf3ae7a36954e64fc014e6bb7afd20c5a5247

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#include "spi.h"
#include "gpio.h"
 
void SPI3_Init(void)
{
        CMU_PERCLK_SetableEx(PADCLK, ENABLE);  //PADʱÖÓ£¨GPIO£©Ê¹Äܺ¯Êý
        
//    AltFunIO(GPIOF, GPIO_Pin_15, ALTFUN_NORMAL);    // SSN
 
 
    AltFunIO(SPI3_PORT, SPI3_SCK_PIN, ALTFUN_NORMAL);    // SCK
    AltFunIO(SPI3_PORT, SPI3_MISO_PIN, ALTFUN_NORMAL);    // MISO
    AltFunIO(SPI3_PORT, SPI3_MOSI_PIN, ALTFUN_NORMAL);    // MOSI
    
        CMU_PERCLK_SetableEx(SPI3CLK, ENABLE);   //¿ªÆôSPI3×ÜÏßʱÖÓ
 
        SPIx_CR1_IOSWAP_Set(SPI3, SPIx_CR1_IOSWAP_DEFAULT);  // MISO¡¢MOSIĬÈÏÒý½Å ²»½»»»
        SPIx_CR1_MM_Set(SPI3, SPIx_CR1_MM_MASTER);           //masterģʽ
        SPIx_CR1_WAIT_Set(SPI3, SPIx_CR1_WAIT_1WAIT);        // Ã¿·¢ËÍÍêÒ»Ö¡ºó²åÈëÒ»¸öCLK
        SPIx_CR1_BAUD_Set(SPI3, SPIx_CR1_BAUD_DIV4);         //²¨ÌØÂÊÉèÖÃΪÍâÉèʱÖÓ2·ÖƵ
        SPIx_CR1_LSBF_Set(SPI3, SPIx_CR1_LSBF_MSB);          //Ö¡¸ñʽÏÈ·¢ËÍMSB
        SPIx_CR1_CPHOL_Set(SPI3, SPIx_CR1_CPHOL_LOW);        //CLKÍ£Ö¹Ôڵ͵çƽ
        SPIx_CR1_CPHA_Set(SPI3, SPIx_CR1_CPHA_1CLOCK);       //µÚÒ»¸öʱÖÓ±ßÑز¶×½
        SPIx_CR2_SSNSEN_Setable(SPI3, DISABLE);                 //SSNÓÉÓ²¼þ¿ØÖÆ
 
        SPIx_CR2_RXO_Setable(SPI3, DISABLE);                 //SPIÉèÖÃΪȫ˫¹¤
        SPIx_CR2_DLEN_Set(SPI3, SPIx_CR2_DLEN_8BIT);         //ͨÐÅÊý¾Ý×Ö³¤8bit
        SPIx_CR2_HALFDUPLEX_Set(SPI3, SPIx_CR2_HALFDUPLEX_SPI); //SPIÉèÖÃΪ±ê×¼SPIģʽ
        SPIx_CR2_SSNM_Set(SPI3, SPIx_CR2_SSNM_LOW);             //ÿ´Î·¢Íêmasterºóssn±£³ÖµÍ
        SPIx_CR2_TXO_AC_Setable(SPI3, DISABLE);                 //¹Ø±ÕTXONLY×Ô¶¯Çå0
        SPIx_CR2_TXO_Setable(SPI3, DISABLE);                    //¹Ø±ÕTXONLYģʽ
    //    SPIx_CR2_SSN_Set(SPI3, SPIx_CR2_SSN_HIGH);               //SSNSENΪ£±Ê±SNNÊä³ö¸ßµçƽ
        
        SPIx_CR3_SERRC_Clr(SPI3);             //Çå³ý´Ó»ú´íÎó±êÖ¾
        SPIx_CR3_MERRC_Clr(SPI3);             //Çå³ýÖ÷»ú´íÎó±êÖ¾
        SPIx_CR3_RXBFC_Clr(SPI3);             //Çå³ýRXBUF
        SPIx_CR3_TXBFC_Clr(SPI3);             //Çå³ýTXBUF
    
    SPIx_CR2_SPIEN_Setable(SPI3, ENABLE);          //ʹÄÜSPI3
}
 
 
void SPI3_sleep(void)
{
    CMU_PERCLK_SetableEx(SPI3CLK, DISABLE);   //¿ªÆôSPI3×ÜÏßʱÖÓ
 
    SPIx_CR2_SPIEN_Setable(SPI3, DISABLE);          //ʧÄÜSPI3
 
    CloseIO(SPI3_PORT, SPI3_SCK_PIN);    // SCK
    CloseIO(SPI3_PORT, SPI3_MISO_PIN);    // MISO
    CloseIO(SPI3_PORT, SPI3_MOSI_PIN);    // MOSI
}
 
uint8_t SpiWriteAndRead(uint32_t data)
{
    SPIx_TXBUF_Write(SPI3, data);
    while (!SPIx_ISR_TXBE_Chk(SPI3));
    while (!SPIx_ISR_RXBF_Chk(SPI3));
    data = SPIx_RXBUF_Read(SPI3);
    
    return data;
}
 
void SpiWrite(uint8_t *data, uint32_t length)
{
    while (length--)
    {
        SpiWriteAndRead(*data);
        data++;
    }
}
 
void SpiRead(uint8_t *data, uint32_t length)
{
    while (length--)
    {
        *data = SpiWriteAndRead(0x00);
        data++;
    }
}