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76 lines
1.9 KiB
C++
76 lines
1.9 KiB
C++
/*
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* Copyright (c) 2010 by Cristian Maglie <c.maglie@bug.st>
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* SPI Master library for arduino.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of either the GNU General Public License version 2
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* or the GNU Lesser General Public License version 2.1, both as
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* published by the Free Software Foundation.
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*/
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#include "SPI.h"
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SPIClass::SPIClass(Spi *_spi, uint32_t _id, void(*_initCb)(void)) :
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spi(_spi), id(_id), initCb(_initCb) {
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// Empty
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}
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void SPIClass::begin() {
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initCb();
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// Set CS on NPCS3
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SPI_Configure(spi, id, SPI_MR_MSTR | SPI_MR_PCS(0x07));
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SPI_Enable( spi);
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setClockDivider(1);
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}
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void SPIClass::end() {
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SPI_Disable( spi);
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}
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void SPIClass::setBitOrder(uint8_t bitOrder) {
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// Not supported
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}
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void SPIClass::setDataMode(uint8_t _mode) {
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mode = _mode;
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SPI_ConfigureNPCS(spi, 3, mode | SPI_CSR_SCBR(divider));
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}
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void SPIClass::setClockDivider(uint8_t _divider) {
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divider = _divider;
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SPI_ConfigureNPCS(spi, 3, mode | SPI_CSR_SCBR(divider));
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}
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byte SPIClass::transfer(byte _data) {
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SPI_Write(spi, 0, _data);
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return SPI_Read(spi);
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}
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void SPIClass::attachInterrupt(void) {
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// Should be enableInterrupt()
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}
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void SPIClass::detachInterrupt(void) {
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// Should be disableInterrupt()
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}
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#if SPI_INTERFACES_COUNT > 0
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static void SPI_0_Init(void) {
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PIO_Configure(g_APinDescription[PIN_SPI_MOSI].pPort,
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g_APinDescription[PIN_SPI_MOSI].ulPinType,
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g_APinDescription[PIN_SPI_MOSI].ulPin,
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g_APinDescription[PIN_SPI_MOSI].ulPinConfiguration);
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PIO_Configure(g_APinDescription[PIN_SPI_MISO].pPort,
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g_APinDescription[PIN_SPI_MISO].ulPinType,
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g_APinDescription[PIN_SPI_MISO].ulPin,
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g_APinDescription[PIN_SPI_MISO].ulPinConfiguration);
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PIO_Configure(g_APinDescription[PIN_SPI_SCK].pPort,
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g_APinDescription[PIN_SPI_SCK].ulPinType,
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g_APinDescription[PIN_SPI_SCK].ulPin,
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g_APinDescription[PIN_SPI_SCK].ulPinConfiguration);
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}
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SPIClass SPI_0(SPI_INTERFACE, SPI_INTERFACE_ID, SPI_0_Init);
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#endif
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