restore PR 9661 files & V1 fix
This commit is contained in:
		@@ -53,6 +53,7 @@
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// --------------------------------------------------------------------------
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#if ENABLED(SOFTWARE_SPI)
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  // --------------------------------------------------------------------------
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  // software SPI
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  // --------------------------------------------------------------------------
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@@ -493,44 +494,77 @@
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  static pfnSpiTxBlock spiTxBlock = spiTxBlockX;
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  static pfnSpiRxBlock spiRxBlock = spiRxBlockX;
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  void spiBegin() {
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    SET_OUTPUT(SS_PIN);
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    WRITE(SS_PIN, HIGH);
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    SET_OUTPUT(SCK_PIN);
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    SET_INPUT(MISO_PIN);
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    SET_OUTPUT(MOSI_PIN);
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  }
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  #if MB(ALLIGATOR)  // control SDSS pin
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    void spiBegin() {
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      SET_OUTPUT(SS_PIN);
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      WRITE(SS_PIN, HIGH);
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      SET_OUTPUT(SCK_PIN);
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      SET_INPUT(MISO_PIN);
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      SET_OUTPUT(MOSI_PIN);
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    }
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  uint8_t spiRec() {
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    WRITE(SS_PIN, LOW);
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    WRITE(MOSI_PIN, 1); /* Output 1s 1*/
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    uint8_t b = spiTransferRx(0xFF);
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    WRITE(SS_PIN, HIGH);
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    return b;
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  }
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    uint8_t spiRec() {
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      WRITE(SS_PIN, LOW);
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      WRITE(MOSI_PIN, 1); /* Output 1s 1*/
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      uint8_t b = spiTransferRx(0xFF);
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      WRITE(SS_PIN, HIGH);
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      return b;
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    }
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  void spiRead(uint8_t* buf, uint16_t nbyte) {
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    uint32_t todo = nbyte;
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    if (todo == 0) return;
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    void spiRead(uint8_t* buf, uint16_t nbyte) {
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      uint32_t todo = nbyte;
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      if (todo == 0) return;
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    WRITE(SS_PIN, LOW);
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    WRITE(MOSI_PIN, 1); /* Output 1s 1*/
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    spiRxBlock(buf,nbyte);
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    WRITE(SS_PIN, HIGH);
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  }
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      WRITE(SS_PIN, LOW);
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      WRITE(MOSI_PIN, 1); /* Output 1s 1*/
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      spiRxBlock(buf,nbyte);
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      WRITE(SS_PIN, HIGH);
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    }
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  void spiSend(uint8_t b) {
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    WRITE(SS_PIN, LOW);
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    (void) spiTransferTx(b);
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    WRITE(SS_PIN, HIGH);
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  }
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    void spiSend(uint8_t b) {
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      WRITE(SS_PIN, LOW);
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      (void) spiTransferTx(b);
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      WRITE(SS_PIN, HIGH);
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    }
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  void spiSendBlock(uint8_t token, const uint8_t* buf) {
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    void spiSendBlock(uint8_t token, const uint8_t* buf) {
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      WRITE(SS_PIN, LOW);
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      (void) spiTransferTx(token);
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      spiTxBlock(buf,512);
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      WRITE(SS_PIN, HIGH);
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  #else   // let calling routine control SDSS
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    void spiBegin() {
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      SET_OUTPUT(SS_PIN);
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      SET_OUTPUT(SCK_PIN);
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      SET_INPUT(MISO_PIN);
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      SET_OUTPUT(MOSI_PIN);
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    }
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    WRITE(SS_PIN, LOW);
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    (void) spiTransferTx(token);
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    spiTxBlock(buf,512);
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    WRITE(SS_PIN, HIGH);
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    uint8_t spiRec() {
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      WRITE(MOSI_PIN, 1); /* Output 1s 1*/
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      uint8_t b = spiTransferRx(0xFF);
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      return b;
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    }
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    void spiRead(uint8_t* buf, uint16_t nbyte) {
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      uint32_t todo = nbyte;
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      if (todo == 0) return;
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      WRITE(MOSI_PIN, 1); /* Output 1s 1*/
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      spiRxBlock(buf,nbyte);
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    }
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    void spiSend(uint8_t b) {
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      (void) spiTransferTx(b);
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    }
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    void spiSendBlock(uint8_t token, const uint8_t* buf) {
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      (void) spiTransferTx(token);
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      spiTxBlock(buf,512);
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    #endif
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  }
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  /**
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@@ -566,7 +600,9 @@
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        break;
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    }
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    WRITE(SS_PIN, HIGH);
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    #if MB(ALLIGATOR)
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      WRITE(SS_PIN, HIGH);
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    #endif  
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    WRITE(MOSI_PIN, HIGH);
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    WRITE(SCK_PIN, LOW);
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  }
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@@ -574,211 +610,296 @@
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  /** Begin SPI transaction, set clock, bit order, data mode */
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  void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
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    // TODO: to be implemented
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  }
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  #pragma GCC reset_options
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#else
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  // --------------------------------------------------------------------------
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  // hardware SPI
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  // --------------------------------------------------------------------------
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  // 8.4 MHz, 4 MHz, 2 MHz, 1 MHz, 0.5 MHz, 0.329 MHz, 0.329 MHz
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  int spiDueDividors[] = { 10, 21, 42, 84, 168, 255, 255 };
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  bool spiInitMaded = false;
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  void spiBegin() {
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    if(spiInitMaded == false) {
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      // Configure SPI pins
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      PIO_Configure(
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         g_APinDescription[SCK_PIN].pPort,
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         g_APinDescription[SCK_PIN].ulPinType,
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         g_APinDescription[SCK_PIN].ulPin,
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         g_APinDescription[SCK_PIN].ulPinConfiguration);
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      PIO_Configure(
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         g_APinDescription[MOSI_PIN].pPort,
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         g_APinDescription[MOSI_PIN].ulPinType,
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         g_APinDescription[MOSI_PIN].ulPin,
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         g_APinDescription[MOSI_PIN].ulPinConfiguration);
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      PIO_Configure(
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         g_APinDescription[MISO_PIN].pPort,
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         g_APinDescription[MISO_PIN].ulPinType,
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         g_APinDescription[MISO_PIN].ulPin,
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         g_APinDescription[MISO_PIN].ulPinConfiguration);
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  #if MB(ALLIGATOR)  
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    // slave selects controlled by SPI controller
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    // doesn't support changing SPI speeds for SD card
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    // --------------------------------------------------------------------------
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    // hardware SPI
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    // --------------------------------------------------------------------------
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    // 8.4 MHz, 4 MHz, 2 MHz, 1 MHz, 0.5 MHz, 0.329 MHz, 0.329 MHz
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    int spiDueDividors[] = { 10, 21, 42, 84, 168, 255, 255 };
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    bool spiInitMaded = false;
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      // set master mode, peripheral select, fault detection
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      SPI_Configure(SPI0, ID_SPI0, SPI_MR_MSTR | SPI_MR_MODFDIS | SPI_MR_PS);
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      SPI_Enable(SPI0);
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    void spiBegin() {
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      if(spiInitMaded == false) {
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        // Configure SPI pins
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        PIO_Configure(
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           g_APinDescription[SCK_PIN].pPort,
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           g_APinDescription[SCK_PIN].ulPinType,
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           g_APinDescription[SCK_PIN].ulPin,
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           g_APinDescription[SCK_PIN].ulPinConfiguration);
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        PIO_Configure(
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           g_APinDescription[MOSI_PIN].pPort,
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           g_APinDescription[MOSI_PIN].ulPinType,
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           g_APinDescription[MOSI_PIN].ulPin,
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           g_APinDescription[MOSI_PIN].ulPinConfiguration);
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        PIO_Configure(
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           g_APinDescription[MISO_PIN].pPort,
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           g_APinDescription[MISO_PIN].ulPinType,
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           g_APinDescription[MISO_PIN].ulPin,
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           g_APinDescription[MISO_PIN].ulPinConfiguration);
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      #if MB(ALLIGATOR)
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        SET_OUTPUT(DAC0_SYNC);
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        #if EXTRUDERS > 1
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          SET_OUTPUT(DAC1_SYNC);
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          WRITE(DAC1_SYNC, HIGH);
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        #endif
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        SET_OUTPUT(SPI_EEPROM1_CS);
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        SET_OUTPUT(SPI_EEPROM2_CS);
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        SET_OUTPUT(SPI_FLASH_CS);
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        WRITE(DAC0_SYNC, HIGH);
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        WRITE(SPI_EEPROM1_CS, HIGH );
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        WRITE(SPI_EEPROM2_CS, HIGH );
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        WRITE(SPI_FLASH_CS, HIGH );
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        WRITE(SS_PIN, HIGH );
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      #endif // MB(ALLIGATOR)
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        // set master mode, peripheral select, fault detection
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        SPI_Configure(SPI0, ID_SPI0, SPI_MR_MSTR | SPI_MR_MODFDIS | SPI_MR_PS);
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        SPI_Enable(SPI0);
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      PIO_Configure(
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        g_APinDescription[SPI_PIN].pPort,
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        g_APinDescription[SPI_PIN].ulPinType,
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        g_APinDescription[SPI_PIN].ulPin,
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        g_APinDescription[SPI_PIN].ulPinConfiguration);
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      spiInit(1);
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      spiInitMaded = true;
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        #if MB(ALLIGATOR)
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          SET_OUTPUT(DAC0_SYNC);
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          #if EXTRUDERS > 1
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            SET_OUTPUT(DAC1_SYNC);
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            WRITE(DAC1_SYNC, HIGH);
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          #endif
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          SET_OUTPUT(SPI_EEPROM1_CS);
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          SET_OUTPUT(SPI_EEPROM2_CS);
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          SET_OUTPUT(SPI_FLASH_CS);
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          WRITE(DAC0_SYNC, HIGH);
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          WRITE(SPI_EEPROM1_CS, HIGH );
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          WRITE(SPI_EEPROM2_CS, HIGH );
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          WRITE(SPI_FLASH_CS, HIGH );
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          WRITE(SS_PIN, HIGH );
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        #endif // MB(ALLIGATOR)
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        OUT_WRITE(SDSS,0);
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        PIO_Configure(
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          g_APinDescription[SPI_PIN].pPort,
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          g_APinDescription[SPI_PIN].ulPinType,
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          g_APinDescription[SPI_PIN].ulPin,
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          g_APinDescription[SPI_PIN].ulPinConfiguration);
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        spiInit(1);
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        spiInitMaded = true;
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      }
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    }
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  }
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  void spiInit(uint8_t spiRate) {
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    if(spiInitMaded == false) {
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      if(spiRate > 6) spiRate = 1;
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    void spiInit(uint8_t spiRate) {
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      if(spiInitMaded == false) {
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        if(spiRate > 6) spiRate = 1;
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        #if MB(ALLIGATOR)
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          // Set SPI mode 1, clock, select not active after transfer, with delay between transfers
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          SPI_ConfigureNPCS(SPI0, SPI_CHAN_DAC,
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                            SPI_CSR_CSAAT | SPI_CSR_SCBR(spiDueDividors[spiRate]) |
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                            SPI_CSR_DLYBCT(1));
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          // Set SPI mode 0, clock, select not active after transfer, with delay between transfers
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          SPI_ConfigureNPCS(SPI0, SPI_CHAN_EEPROM1, SPI_CSR_NCPHA |
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                            SPI_CSR_CSAAT | SPI_CSR_SCBR(spiDueDividors[spiRate]) |
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                            SPI_CSR_DLYBCT(1));
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        #endif//MB(ALLIGATOR)
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      #if MB(ALLIGATOR)
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        // Set SPI mode 1, clock, select not active after transfer, with delay between transfers
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        SPI_ConfigureNPCS(SPI0, SPI_CHAN_DAC,
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                          SPI_CSR_CSAAT | SPI_CSR_SCBR(spiDueDividors[spiRate]) |
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                          SPI_CSR_DLYBCT(1));
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        // Set SPI mode 0, clock, select not active after transfer, with delay between transfers
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        SPI_ConfigureNPCS(SPI0, SPI_CHAN_EEPROM1, SPI_CSR_NCPHA |
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        SPI_ConfigureNPCS(SPI0, SPI_CHAN, SPI_CSR_NCPHA |
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                          SPI_CSR_CSAAT | SPI_CSR_SCBR(spiDueDividors[spiRate]) |
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                          SPI_CSR_DLYBCT(1));
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      #endif//MB(ALLIGATOR)
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      // Set SPI mode 0, clock, select not active after transfer, with delay between transfers
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      SPI_ConfigureNPCS(SPI0, SPI_CHAN, SPI_CSR_NCPHA |
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                        SPI_CSR_CSAAT | SPI_CSR_SCBR(spiDueDividors[spiRate]) |
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                        SPI_CSR_DLYBCT(1));
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      SPI_Enable(SPI0);
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      spiInitMaded = true;
 | 
			
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        SPI_Enable(SPI0);
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        spiInitMaded = true;
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      }
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    }
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  }
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  // Write single byte to SPI
 | 
			
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  void spiSend(byte b) {
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    // write byte with address and end transmission flag
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    SPI0->SPI_TDR = (uint32_t)b | SPI_PCS(SPI_CHAN) | SPI_TDR_LASTXFER;
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    // wait for transmit register empty
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    while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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    // wait for receive register
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		||||
    while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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    // clear status
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    SPI0->SPI_RDR;
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    //delayMicroseconds(1U);
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  }
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		||||
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  void spiSend(const uint8_t* buf, size_t n) {
 | 
			
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    if (n == 0) return;
 | 
			
		||||
    for (size_t i = 0; i < n - 1; i++) {
 | 
			
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      SPI0->SPI_TDR = (uint32_t)buf[i] | SPI_PCS(SPI_CHAN);
 | 
			
		||||
    // Write single byte to SPI
 | 
			
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    void spiSend(byte b) {
 | 
			
		||||
      // write byte with address and end transmission flag
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      SPI0->SPI_TDR = (uint32_t)b | SPI_PCS(SPI_CHAN) | SPI_TDR_LASTXFER;
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		||||
      // wait for transmit register empty
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      while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
      // wait for receive register
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		||||
      while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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      // clear status
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      SPI0->SPI_RDR;
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      //delayMicroseconds(1U);
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    }
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    spiSend(buf[n - 1]);
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  }
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  void spiSend(uint32_t chan, byte b) {
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    uint8_t dummy_read = 0;
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    // wait for transmit register empty
 | 
			
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    while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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		||||
    // write byte with address and end transmission flag
 | 
			
		||||
    SPI0->SPI_TDR = (uint32_t)b | SPI_PCS(chan) | SPI_TDR_LASTXFER;
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		||||
    // wait for receive register
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    while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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		||||
    // clear status
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    while ((SPI0->SPI_SR & SPI_SR_RDRF) == 1)
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      dummy_read = SPI0->SPI_RDR;
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		||||
    UNUSED(dummy_read);
 | 
			
		||||
  }
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		||||
    void spiSend(const uint8_t* buf, size_t n) {
 | 
			
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      if (n == 0) return;
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		||||
      for (size_t i = 0; i < n - 1; i++) {
 | 
			
		||||
        SPI0->SPI_TDR = (uint32_t)buf[i] | SPI_PCS(SPI_CHAN);
 | 
			
		||||
        while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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		||||
        while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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		||||
        SPI0->SPI_RDR;
 | 
			
		||||
        //delayMicroseconds(1U);
 | 
			
		||||
      }
 | 
			
		||||
      spiSend(buf[n - 1]);
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
  void spiSend(uint32_t chan, const uint8_t* buf, size_t n) {
 | 
			
		||||
    uint8_t dummy_read = 0;
 | 
			
		||||
    if (n == 0) return;
 | 
			
		||||
    for (int i = 0; i < (int)n - 1; i++) {
 | 
			
		||||
    void spiSend(uint32_t chan, byte b) {
 | 
			
		||||
      uint8_t dummy_read = 0;
 | 
			
		||||
      // wait for transmit register empty
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
      SPI0->SPI_TDR = (uint32_t)buf[i] | SPI_PCS(chan);
 | 
			
		||||
      // write byte with address and end transmission flag
 | 
			
		||||
      SPI0->SPI_TDR = (uint32_t)b | SPI_PCS(chan) | SPI_TDR_LASTXFER;
 | 
			
		||||
      // wait for receive register
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
      // clear status
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_RDRF) == 1)
 | 
			
		||||
        dummy_read = SPI0->SPI_RDR;
 | 
			
		||||
      UNUSED(dummy_read);
 | 
			
		||||
    }
 | 
			
		||||
    spiSend(chan, buf[n - 1]);
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  // Read single byte from SPI
 | 
			
		||||
  uint8_t spiRec() {
 | 
			
		||||
    // write dummy byte with address and end transmission flag
 | 
			
		||||
    SPI0->SPI_TDR = 0x000000FF | SPI_PCS(SPI_CHAN) | SPI_TDR_LASTXFER;
 | 
			
		||||
    // wait for transmit register empty
 | 
			
		||||
    while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
 | 
			
		||||
    // wait for receive register
 | 
			
		||||
    while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
    // get byte from receive register
 | 
			
		||||
    //delayMicroseconds(1U);
 | 
			
		||||
    return SPI0->SPI_RDR;
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  uint8_t spiRec(uint32_t chan) {
 | 
			
		||||
    uint8_t spirec_tmp;
 | 
			
		||||
    // wait for transmit register empty
 | 
			
		||||
    while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
    while ((SPI0->SPI_SR & SPI_SR_RDRF) == 1)
 | 
			
		||||
      spirec_tmp =  SPI0->SPI_RDR;
 | 
			
		||||
      UNUSED(spirec_tmp);
 | 
			
		||||
 | 
			
		||||
    // write dummy byte with address and end transmission flag
 | 
			
		||||
    SPI0->SPI_TDR = 0x000000FF | SPI_PCS(chan) | SPI_TDR_LASTXFER;
 | 
			
		||||
 | 
			
		||||
    // wait for receive register
 | 
			
		||||
    while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
    // get byte from receive register
 | 
			
		||||
    return SPI0->SPI_RDR;
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  // Read from SPI into buffer
 | 
			
		||||
  void spiRead(uint8_t*buf, uint16_t nbyte) {
 | 
			
		||||
    if (nbyte-- == 0) return;
 | 
			
		||||
 | 
			
		||||
    for (int i = 0; i < nbyte; i++) {
 | 
			
		||||
      //while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
      SPI0->SPI_TDR = 0x000000FF | SPI_PCS(SPI_CHAN);
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
      buf[i] = SPI0->SPI_RDR;
 | 
			
		||||
      //delayMicroseconds(1U);
 | 
			
		||||
    void spiSend(uint32_t chan, const uint8_t* buf, size_t n) {
 | 
			
		||||
      uint8_t dummy_read = 0;
 | 
			
		||||
      if (n == 0) return;
 | 
			
		||||
      for (int i = 0; i < (int)n - 1; i++) {
 | 
			
		||||
        while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
        SPI0->SPI_TDR = (uint32_t)buf[i] | SPI_PCS(chan);
 | 
			
		||||
        while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
        while ((SPI0->SPI_SR & SPI_SR_RDRF) == 1)
 | 
			
		||||
          dummy_read = SPI0->SPI_RDR;
 | 
			
		||||
        UNUSED(dummy_read);
 | 
			
		||||
      }
 | 
			
		||||
      spiSend(chan, buf[n - 1]);
 | 
			
		||||
    }
 | 
			
		||||
    buf[nbyte] = spiRec();
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  // Write from buffer to SPI
 | 
			
		||||
  void spiSendBlock(uint8_t token, const uint8_t* buf) {
 | 
			
		||||
    SPI0->SPI_TDR = (uint32_t)token | SPI_PCS(SPI_CHAN);
 | 
			
		||||
    while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
    //while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
    //SPI0->SPI_RDR;
 | 
			
		||||
    for (int i = 0; i < 511; i++) {
 | 
			
		||||
      SPI0->SPI_TDR = (uint32_t)buf[i] | SPI_PCS(SPI_CHAN);
 | 
			
		||||
    // Read single byte from SPI
 | 
			
		||||
    uint8_t spiRec() {
 | 
			
		||||
      // write dummy byte with address and end transmission flag
 | 
			
		||||
      SPI0->SPI_TDR = 0x000000FF | SPI_PCS(SPI_CHAN) | SPI_TDR_LASTXFER;
 | 
			
		||||
      // wait for transmit register empty
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
 | 
			
		||||
      // wait for receive register
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
      SPI0->SPI_RDR;
 | 
			
		||||
      // get byte from receive register
 | 
			
		||||
      //delayMicroseconds(1U);
 | 
			
		||||
      return SPI0->SPI_RDR;
 | 
			
		||||
    }
 | 
			
		||||
    spiSend(buf[511]);
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  /** Begin SPI transaction, set clock, bit order, data mode */
 | 
			
		||||
  void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
 | 
			
		||||
    // TODO: to be implemented
 | 
			
		||||
  }
 | 
			
		||||
    uint8_t spiRec(uint32_t chan) {
 | 
			
		||||
      uint8_t spirec_tmp;
 | 
			
		||||
      // wait for transmit register empty
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_RDRF) == 1)
 | 
			
		||||
        spirec_tmp =  SPI0->SPI_RDR;
 | 
			
		||||
        UNUSED(spirec_tmp);
 | 
			
		||||
 | 
			
		||||
      // write dummy byte with address and end transmission flag
 | 
			
		||||
      SPI0->SPI_TDR = 0x000000FF | SPI_PCS(chan) | SPI_TDR_LASTXFER;
 | 
			
		||||
 | 
			
		||||
      // wait for receive register
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
      // get byte from receive register
 | 
			
		||||
      return SPI0->SPI_RDR;
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    // Read from SPI into buffer
 | 
			
		||||
    void spiRead(uint8_t*buf, uint16_t nbyte) {
 | 
			
		||||
      if (nbyte-- == 0) return;
 | 
			
		||||
 | 
			
		||||
      for (int i = 0; i < nbyte; i++) {
 | 
			
		||||
        //while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
        SPI0->SPI_TDR = 0x000000FF | SPI_PCS(SPI_CHAN);
 | 
			
		||||
        while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
        buf[i] = SPI0->SPI_RDR;
 | 
			
		||||
        //delayMicroseconds(1U);
 | 
			
		||||
      }
 | 
			
		||||
      buf[nbyte] = spiRec();
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    // Write from buffer to SPI
 | 
			
		||||
    void spiSendBlock(uint8_t token, const uint8_t* buf) {
 | 
			
		||||
      SPI0->SPI_TDR = (uint32_t)token | SPI_PCS(SPI_CHAN);
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
      //while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
      //SPI0->SPI_RDR;
 | 
			
		||||
      for (int i = 0; i < 511; i++) {
 | 
			
		||||
        SPI0->SPI_TDR = (uint32_t)buf[i] | SPI_PCS(SPI_CHAN);
 | 
			
		||||
        while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
        while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
        SPI0->SPI_RDR;
 | 
			
		||||
        //delayMicroseconds(1U);
 | 
			
		||||
      }
 | 
			
		||||
      spiSend(buf[511]);
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    /** Begin SPI transaction, set clock, bit order, data mode */
 | 
			
		||||
    void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
 | 
			
		||||
      // TODO: to be implemented
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
  #else  // U8G compatible hardware SPI
 | 
			
		||||
 
 | 
			
		||||
    void spiInit(uint8_t spiRate = 6 ) {  // default to slowest rate if not specified)
 | 
			
		||||
      // 8.4 MHz, 4 MHz, 2 MHz, 1 MHz, 0.5 MHz, 0.329 MHz, 0.329 MHz
 | 
			
		||||
      int spiDueDividors[] = { 10, 21, 42, 84, 168, 255, 255 };
 | 
			
		||||
      if(spiRate > 6) spiRate = 1;
 | 
			
		||||
 | 
			
		||||
          /* enable PIOA and SPI0 */
 | 
			
		||||
      REG_PMC_PCER0 = (1UL << ID_PIOA) | (1UL << ID_SPI0);
 | 
			
		||||
 | 
			
		||||
      /* disable PIO on A26 and A27 */
 | 
			
		||||
      REG_PIOA_PDR = 0x0c000000;
 | 
			
		||||
      OUT_WRITE(SDSS, 1);
 | 
			
		||||
 | 
			
		||||
      /* reset SPI0 (from sam lib) */
 | 
			
		||||
      SPI0->SPI_CR = SPI_CR_SPIDIS;
 | 
			
		||||
      SPI0->SPI_CR = SPI_CR_SWRST;
 | 
			
		||||
      SPI0->SPI_CR = SPI_CR_SWRST;
 | 
			
		||||
      SPI0->SPI_CR = SPI_CR_SPIEN;
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
      /* master mode, no fault detection, chip select 0 */
 | 
			
		||||
      SPI0->SPI_MR = SPI_MR_MSTR | SPI_MR_PCSDEC | SPI_MR_MODFDIS;
 | 
			
		||||
 | 
			
		||||
      /* SPI mode 0, 8 Bit data transfer, baud rate */
 | 
			
		||||
      SPI0->SPI_CSR[0] = SPI_CSR_SCBR(spiDueDividors[spiRate]) | 1;
 | 
			
		||||
    }     
 | 
			
		||||
 | 
			
		||||
    static uint8_t spiTransfer(uint8_t data) {
 | 
			
		||||
 | 
			
		||||
      /* wait until tx register is empty */
 | 
			
		||||
      while( (SPI0->SPI_SR & SPI_SR_TDRE) == 0 );
 | 
			
		||||
      /* send data */
 | 
			
		||||
      SPI0->SPI_TDR = (uint32_t)data; // | SPI_PCS(0xF);
 | 
			
		||||
 | 
			
		||||
      // wait for transmit register empty
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
 | 
			
		||||
 | 
			
		||||
      // wait for receive register
 | 
			
		||||
      while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
 | 
			
		||||
      // get byte from receive register
 | 
			
		||||
      return SPI0->SPI_RDR;
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    void spiBegin() {
 | 
			
		||||
      spiInit();
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    uint8_t spiRec() {
 | 
			
		||||
      uint8_t data = spiTransfer(0xff);
 | 
			
		||||
      return data;
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    void spiRead(uint8_t*buf, uint16_t nbyte) {
 | 
			
		||||
      if (nbyte == 0) return;
 | 
			
		||||
      for (int i = 0; i < nbyte; i++) {
 | 
			
		||||
        buf[i] = spiTransfer(0xff);
 | 
			
		||||
      }
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    void spiSend(uint8_t data) {
 | 
			
		||||
      spiTransfer(data);
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    void spiSend(const uint8_t* buf, size_t n) {
 | 
			
		||||
      if (n == 0) return;
 | 
			
		||||
      for (uint16_t i = 0; i < n; i++)
 | 
			
		||||
        spiTransfer(buf[i]);
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    void spiSendBlock(uint8_t token, const uint8_t* buf) {
 | 
			
		||||
      spiTransfer(token);
 | 
			
		||||
      for (uint16_t i = 0; i < 512; i++)
 | 
			
		||||
        spiTransfer(buf[i]);
 | 
			
		||||
    }  
 | 
			
		||||
      
 | 
			
		||||
  #endif  //MB(ALLIGATOR)
 | 
			
		||||
#endif // ENABLED(SOFTWARE_SPI)
 | 
			
		||||
 | 
			
		||||
#endif // ARDUINO_ARCH_SAM
 | 
			
		||||
 
 | 
			
		||||
		Reference in New Issue
	
	Block a user