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@ -69,10 +69,10 @@ |
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// run at ~8 .. ~10Mhz - Tx version (Rx data discarded)
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static uint8_t spiTransferTx0(uint8_t bout) { // using Mode 0
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uint32_t MOSI_PORT_PLUS30 = ((uint32_t) PORT(MOSI_PIN)) + 0x30; /* SODR of port */ |
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uint32_t MOSI_MASK = PIN_MASK(MOSI_PIN); |
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uint32_t SCK_PORT_PLUS30 = ((uint32_t) PORT(SCK_PIN)) + 0x30; /* SODR of port */ |
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uint32_t SCK_MASK = PIN_MASK(SCK_PIN); |
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uint32_t MOSI_PORT_PLUS30 = ((uint32_t) PORT(SD_MOSI_PIN)) + 0x30; /* SODR of port */ |
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uint32_t MOSI_MASK = PIN_MASK(SD_MOSI_PIN); |
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uint32_t SCK_PORT_PLUS30 = ((uint32_t) PORT(SD_SCK_PIN)) + 0x30; /* SODR of port */ |
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uint32_t SCK_MASK = PIN_MASK(SD_SCK_PIN); |
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uint32_t idx = 0; |
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/* Negate bout, as the assembler requires a negated value */ |
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@ -154,9 +154,9 @@ |
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static uint8_t spiTransferRx0(uint8_t) { // using Mode 0
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uint32_t bin = 0; |
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uint32_t work = 0; |
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uint32_t BITBAND_MISO_PORT = BITBAND_ADDRESS( ((uint32_t)PORT(MISO_PIN))+0x3C, PIN_SHIFT(MISO_PIN)); /* PDSR of port in bitband area */ |
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uint32_t SCK_PORT_PLUS30 = ((uint32_t) PORT(SCK_PIN)) + 0x30; /* SODR of port */ |
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uint32_t SCK_MASK = PIN_MASK(SCK_PIN); |
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uint32_t BITBAND_MISO_PORT = BITBAND_ADDRESS( ((uint32_t)PORT(SD_MISO_PIN))+0x3C, PIN_SHIFT(SD_MISO_PIN)); /* PDSR of port in bitband area */ |
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uint32_t SCK_PORT_PLUS30 = ((uint32_t) PORT(SD_SCK_PIN)) + 0x30; /* SODR of port */ |
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uint32_t SCK_MASK = PIN_MASK(SD_SCK_PIN); |
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/* The software SPI routine */ |
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__asm__ __volatile__( |
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@ -225,15 +225,15 @@ |
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static uint8_t spiTransfer1(uint8_t b) { // using Mode 0
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int bits = 8; |
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do { |
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WRITE(MOSI_PIN, b & 0x80); |
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WRITE(SD_MOSI_PIN, b & 0x80); |
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b <<= 1; // little setup time
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WRITE(SCK_PIN, HIGH); |
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WRITE(SD_SCK_PIN, HIGH); |
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DELAY_NS(125); // 10 cycles @ 84mhz
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b |= (READ(MISO_PIN) != 0); |
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b |= (READ(SD_MISO_PIN) != 0); |
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WRITE(SCK_PIN, LOW); |
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WRITE(SD_SCK_PIN, LOW); |
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DELAY_NS(125); // 10 cycles @ 84mhz
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} while (--bits); |
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return b; |
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@ -245,15 +245,15 @@ |
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static uint8_t spiTransferX(uint8_t b) { // using Mode 0
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int bits = 8; |
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do { |
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WRITE(MOSI_PIN, b & 0x80); |
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WRITE(SD_MOSI_PIN, b & 0x80); |
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b <<= 1; // little setup time
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WRITE(SCK_PIN, HIGH); |
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WRITE(SD_SCK_PIN, HIGH); |
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__delay_4cycles(spiDelayCyclesX4); |
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b |= (READ(MISO_PIN) != 0); |
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b |= (READ(SD_MISO_PIN) != 0); |
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WRITE(SCK_PIN, LOW); |
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WRITE(SD_SCK_PIN, LOW); |
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__delay_4cycles(spiDelayCyclesX4); |
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} while (--bits); |
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return b; |
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@ -271,10 +271,10 @@ |
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// Block transfers run at ~8 .. ~10Mhz - Tx version (Rx data discarded)
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static void spiTxBlock0(const uint8_t* ptr, uint32_t todo) { |
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uint32_t MOSI_PORT_PLUS30 = ((uint32_t) PORT(MOSI_PIN)) + 0x30; /* SODR of port */ |
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uint32_t MOSI_MASK = PIN_MASK(MOSI_PIN); |
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uint32_t SCK_PORT_PLUS30 = ((uint32_t) PORT(SCK_PIN)) + 0x30; /* SODR of port */ |
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uint32_t SCK_MASK = PIN_MASK(SCK_PIN); |
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uint32_t MOSI_PORT_PLUS30 = ((uint32_t) PORT(SD_MOSI_PIN)) + 0x30; /* SODR of port */ |
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uint32_t MOSI_MASK = PIN_MASK(SD_MOSI_PIN); |
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uint32_t SCK_PORT_PLUS30 = ((uint32_t) PORT(SD_SCK_PIN)) + 0x30; /* SODR of port */ |
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uint32_t SCK_MASK = PIN_MASK(SD_SCK_PIN); |
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uint32_t work = 0; |
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uint32_t txval = 0; |
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@ -352,9 +352,9 @@ |
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static void spiRxBlock0(uint8_t* ptr, uint32_t todo) { |
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uint32_t bin = 0; |
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uint32_t work = 0; |
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uint32_t BITBAND_MISO_PORT = BITBAND_ADDRESS( ((uint32_t)PORT(MISO_PIN))+0x3C, PIN_SHIFT(MISO_PIN)); /* PDSR of port in bitband area */ |
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uint32_t SCK_PORT_PLUS30 = ((uint32_t) PORT(SCK_PIN)) + 0x30; /* SODR of port */ |
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uint32_t SCK_MASK = PIN_MASK(SCK_PIN); |
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uint32_t BITBAND_MISO_PORT = BITBAND_ADDRESS( ((uint32_t)PORT(SD_MISO_PIN))+0x3C, PIN_SHIFT(SD_MISO_PIN)); /* PDSR of port in bitband area */ |
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uint32_t SCK_PORT_PLUS30 = ((uint32_t) PORT(SD_SCK_PIN)) + 0x30; /* SODR of port */ |
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uint32_t SCK_MASK = PIN_MASK(SD_SCK_PIN); |
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/* The software SPI routine */ |
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__asm__ __volatile__( |
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@ -442,22 +442,22 @@ |
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static pfnSpiRxBlock spiRxBlock = (pfnSpiRxBlock)spiRxBlockX; |
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#if MB(ALLIGATOR) |
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#define _SS_WRITE(S) WRITE(SS_PIN, S) |
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#define _SS_WRITE(S) WRITE(SD_SS_PIN, S) |
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#else |
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#define _SS_WRITE(S) NOOP |
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#endif |
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void spiBegin() { |
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SET_OUTPUT(SS_PIN); |
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SET_OUTPUT(SD_SS_PIN); |
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_SS_WRITE(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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SET_OUTPUT(SD_SCK_PIN); |
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SET_INPUT(SD_MISO_PIN); |
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SET_OUTPUT(SD_MOSI_PIN); |
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} |
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uint8_t spiRec() { |
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_SS_WRITE(LOW); |
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WRITE(MOSI_PIN, HIGH); // Output 1s 1
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WRITE(SD_MOSI_PIN, HIGH); // Output 1s 1
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uint8_t b = spiTransferRx(0xFF); |
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_SS_WRITE(HIGH); |
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return b; |
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@ -466,7 +466,7 @@ |
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void spiRead(uint8_t* buf, uint16_t nbyte) { |
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if (nbyte) { |
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_SS_WRITE(LOW); |
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WRITE(MOSI_PIN, HIGH); // Output 1s 1
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WRITE(SD_MOSI_PIN, HIGH); // Output 1s 1
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spiRxBlock(buf, nbyte); |
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_SS_WRITE(HIGH); |
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} |
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@ -519,8 +519,8 @@ |
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} |
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_SS_WRITE(HIGH); |
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WRITE(MOSI_PIN, HIGH); |
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WRITE(SCK_PIN, LOW); |
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WRITE(SD_MOSI_PIN, HIGH); |
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WRITE(SD_SCK_PIN, LOW); |
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} |
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/** Begin SPI transaction, set clock, bit order, data mode */ |
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@ -575,20 +575,20 @@ |
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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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g_APinDescription[SD_SCK_PIN].pPort, |
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g_APinDescription[SD_SCK_PIN].ulPinType, |
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g_APinDescription[SD_SCK_PIN].ulPin, |
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g_APinDescription[SD_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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g_APinDescription[SD_MOSI_PIN].pPort, |
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g_APinDescription[SD_MOSI_PIN].ulPinType, |
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g_APinDescription[SD_MOSI_PIN].ulPin, |
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g_APinDescription[SD_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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g_APinDescription[SD_MISO_PIN].pPort, |
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g_APinDescription[SD_MISO_PIN].ulPinType, |
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g_APinDescription[SD_MISO_PIN].ulPin, |
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g_APinDescription[SD_MISO_PIN].ulPinConfiguration); |
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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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@ -606,7 +606,7 @@ |
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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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WRITE(SD_SS_PIN, HIGH); |
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OUT_WRITE(SDSS, LOW); |
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Victor Oliveira
4 years ago
Scott Lahteine