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