mac-rom-simm-programmer/hal/m258ke/spi.c

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/*
* spi.c
*
* Created on: Jun 19, 2023
* Author: Doug
*
* Copyright (C) 2011-2023 Doug Brown
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#include "../spi.h"
#include "gpio_hw.h"
#include <stddef.h>
/** Gets the SPI hardware controller at the specified index
*
* @param index The index of the controller. No SPI is available on the M258KE.
* @return The SPI controller, or NULL if an invalid index is supplied
*/
SPIController *SPI_Controller(uint8_t index)
{
(void)index;
return NULL;
}
/** Initializes the supplied SPI controller
*
* @param c The controller
*/
void SPI_InitController(SPIController *c)
{
(void)c;
}
/** Initializes the supplied SPI device
*
* @param spi The device
* @param maxClock The maximum clock rate supported by the device in Hz
* @param mode The SPI mode (see the SPI_MODE_*, SPI_CPHA, and SPI_CPOL defines)
* @return True on success, false on failure
*/
bool SPI_InitDevice(SPIDevice *spi, uint32_t maxClock, uint8_t mode)
{
(void)spi;
(void)maxClock;
(void)mode;
return false;
}
/** Allows an SPI device to request control of the bus.
*
* @param spi The SPI device
*/
void SPI_RequestBus(SPIDevice *spi)
{
(void)spi;
}
/** Allows an SPI device to relinquish control of the bus.
*
* @param spi The SPI device
*/
void SPI_ReleaseBus(SPIDevice *spi)
{
(void)spi;
}
/** Asserts an SPI device's chip select pin
*
* @param spi The SPI device
*/
void SPI_Assert(SPIDevice *spi)
{
(void)spi;
}
/** Deasserts an SPI device's chip select pin
*
* @param spi The SPI device
*/
void SPI_Deassert(SPIDevice *spi)
{
(void)spi;
}
/** Transfers a single byte to/from an SPI device
*
* @param spi The SPI device
* @param b The byte to send
* @return The byte that was simultaneously received
*/
uint8_t SPI_RWByte(SPIDevice *spi, uint8_t b)
{
(void)spi;
(void)b;
return 0;
}