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111 lines
3.1 KiB
111 lines
3.1 KiB
#if defined(__MK64FX512__) || defined(__MK66FX1M0__)
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#include "../HAL.h"
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#include <SPI.h>
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#include <pins_arduino.h>
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#include "spi_pins.h"
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#include "../../core/macros.h"
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static SPISettings spiConfig;
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// Standard SPI functions
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/** Initialise SPI bus */
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void spiBegin(void) {
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#if !PIN_EXISTS(SS)
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#error SS_PIN not defined!
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#endif
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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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//#if DISABLED(SOFTWARE_SPI)
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#if 0
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// set SS high - may be chip select for another SPI device
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#if SET_SPI_SS_HIGH
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WRITE(SS_PIN, HIGH);
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#endif // SET_SPI_SS_HIGH
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// set a default rate
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spiInit(SPI_HALF_SPEED); // 1
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#endif // SOFTWARE_SPI
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}
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/** Configure SPI for specified SPI speed */
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void spiInit(uint8_t spiRate) {
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// Use datarates Marlin uses
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uint32_t clock;
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switch (spiRate) {
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case SPI_FULL_SPEED: clock = 10000000; break;
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case SPI_HALF_SPEED: clock = 5000000; break;
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case SPI_QUARTER_SPEED: clock = 2500000; break;
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case SPI_EIGHTH_SPEED: clock = 1250000; break;
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case SPI_SPEED_5: clock = 625000; break;
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case SPI_SPEED_6: clock = 312500; break;
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default:
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clock = 4000000; // Default from the SPI libarary
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}
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spiConfig = SPISettings(clock, MSBFIRST, SPI_MODE0);
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SPI.begin();
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}
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//------------------------------------------------------------------------------
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/** SPI receive a byte */
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uint8_t spiRec(void) {
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SPI.beginTransaction(spiConfig);
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uint8_t returnByte = SPI.transfer(0xFF);
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SPI.endTransaction();
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return returnByte;
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// SPDR = 0xFF;
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// while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
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// return SPDR;
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}
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//------------------------------------------------------------------------------
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/** SPI read data */
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void spiRead(uint8_t* buf, uint16_t nbyte) {
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SPI.beginTransaction(spiConfig);
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SPI.transfer(buf, nbyte);
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SPI.endTransaction();
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//if (nbyte-- == 0) return;
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// SPDR = 0xFF;
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//for (uint16_t i = 0; i < nbyte; i++) {
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// while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
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// buf[i] = SPDR;
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// SPDR = 0xFF;
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//}
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//while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
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//buf[nbyte] = SPDR;
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}
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//------------------------------------------------------------------------------
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/** SPI send a byte */
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void spiSend(uint8_t b) {
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SPI.beginTransaction(spiConfig);
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SPI.transfer(b);
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SPI.endTransaction();
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// SPDR = b;
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// while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
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}
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//------------------------------------------------------------------------------
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/** SPI send block */
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void spiSendBlock(uint8_t token, const uint8_t* buf) {
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SPI.beginTransaction(spiConfig);
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SPDR = token;
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for (uint16_t i = 0; i < 512; i += 2) {
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while (!TEST(SPSR, SPIF)) { /* nada */ };
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SPDR = buf[i];
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while (!TEST(SPSR, SPIF)) { /* nada */ };
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SPDR = buf[i + 1];
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}
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while (!TEST(SPSR, SPIF)) { /* nada */ };
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SPI.endTransaction();
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}
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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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spiConfig = SPISettings(spiClock, bitOrder, dataMode);
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SPI.beginTransaction(spiConfig);
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}
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#endif // __MK64FX512__ || __MK66FX1M0__
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