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-rw-r--r--os/hal/platforms/STM8S/spi_lld.c289
1 files changed, 0 insertions, 289 deletions
diff --git a/os/hal/platforms/STM8S/spi_lld.c b/os/hal/platforms/STM8S/spi_lld.c
deleted file mode 100644
index 9a9256c61..000000000
--- a/os/hal/platforms/STM8S/spi_lld.c
+++ /dev/null
@@ -1,289 +0,0 @@
-/*
- ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-*/
-
-/**
- * @file STM8S/spi_lld.c
- * @brief STM8S low level SPI driver code.
- *
- * @addtogroup SPI
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if HAL_USE_SPI || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-#if STM8S_SPI_USE_SPI || defined(__DOXYGEN__)
-/** @brief SPI1 driver identifier.*/
-SPIDriver SPID1;
-#endif
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
-#if STM8S_SPI_USE_SPI || defined(__DOXYGEN__)
-/**
- * @brief IRQ 10 service routine.
- *
- * @isr
- */
-CH_IRQ_HANDLER(10) {
-
- CH_IRQ_PROLOGUE();
-
- if ((SPI->SR & SPI_SR_OVR) != 0) {
- /* The overflow condition should never happen because priority is given
- to receive but a hook macro is provided anyway...*/
- STM8S_SPI_ERROR_HOOK(&SPID1);
- }
- /* Handling the DR register like it is a FIFO with depth>1 in order to
- handle the case where a frame arrives immediately after reading the
- DR register.*/
- while ((SPI->SR & SPI_SR_RXNE) != 0) {
- if (SPID1.rxptr != NULL)
- *SPID1.rxptr++ = SPI->DR;
- else
- (void)SPI->DR;
- if (--SPID1.rxcnt == 0) {
- chDbgAssert(SPID1.txcnt == 0,
- "IRQ10, #1", "counter out of synch");
- /* Stops all the IRQ sources.*/
- SPI->ICR = 0;
- /* Portable SPI ISR code defined in the high level driver, note, it
- is a macro.*/
- _spi_isr_code(&SPID1);
- /* Goto because it is mandatory to go through the epilogue, cannot
- just return.*/
- goto exit_isr;
- }
- }
- /* Loading the DR register.*/
- if ((SPI->SR & SPI_SR_TXE) != 0) {
- if (SPID1.txptr != NULL)
- SPI->DR = *SPID1.txptr++;
- else
- SPI->DR = 0xFF;
- }
-
-exit_isr:
- CH_IRQ_EPILOGUE();
-}
-#endif
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level SPI driver initialization.
- *
- * @notapi
- */
-void spi_lld_init(void) {
-
-#if STM8S_SPI_USE_SPI
- spiObjectInit(&SPID1);
-#endif /* STM8S_SPI_USE_SPI */
-}
-
-/**
- * @brief Configures and activates the SPI peripheral.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- *
- * @notapi
- */
-void spi_lld_start(SPIDriver *spip) {
-
- /* Clock activation.*/
- CLK->PCKENR1 |= CLK_PCKENR1_SPI; /* PCKEN11, clock source. */
-
- /* Configuration.*/
- SPI->CR1 = 0;
- SPI->CR1 = spip->config->cr1 | SPI_CR1_MSTR;
- SPI->CR2 = SPI_CR2_SSI | SPI_CR2_SSM;
- SPI->CR1 |= SPI_CR1_SPE;
-}
-
-/**
- * @brief Deactivates the SPI peripheral.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- *
- * @notapi
- */
-void spi_lld_stop(SPIDriver *spip) {
-
- (void)spip;
-
- /* Reset state.*/
- SPI->CR1 = 0;
- SPI->CR2 = 0;
- SPI->ICR = 0;
-
- /* Clock de-activation.*/
- CLK->PCKENR1 &= (uint8_t)~CLK_PCKENR1_SPI; /* PCKEN11, clock source. */
-}
-
-/**
- * @brief Asserts the slave select signal and prepares for transfers.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- *
- * @notapi
- */
-void spi_lld_select(SPIDriver *spip) {
-
- palClearPad(spip->config->ssport, spip->config->sspad);
-}
-
-/**
- * @brief Deasserts the slave select signal.
- * @details The previously selected peripheral is unselected.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- *
- * @notapi
- */
-void spi_lld_unselect(SPIDriver *spip) {
-
- palSetPad(spip->config->ssport, spip->config->sspad);
-}
-
-/**
- * @brief Ignores data on the SPI bus.
- * @details This function transmits a series of idle words on the SPI bus and
- * ignores the received data. This function can be invoked even
- * when a slave select signal has not been yet asserted.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- * @param[in] n number of words to be ignored
- *
- * @notapi
- */
-void spi_lld_ignore(SPIDriver *spip, size_t n) {
-
- spip->rxptr = NULL;
- spip->txptr = NULL;
- spip->rxcnt = spip->txcnt = n;
- SPI->ICR = SPI_ICR_TXEI | SPI_ICR_RXEI | SPI_ICR_ERRIE;
-}
-
-/**
- * @brief Exchanges data on the SPI bus.
- * @details This asynchronous function starts a simultaneous transmit/receive
- * operation.
- * @post At the end of the operation the configured callback is invoked.
- * @note The buffers are organized as uint8_t arrays for data sizes below or
- * equal to 8 bits else it is organized as uint16_t arrays.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- * @param[in] n number of words to be exchanged
- * @param[in] txbuf the pointer to the transmit buffer
- * @param[out] rxbuf the pointer to the receive buffer
- *
- * @notapi
- */
-void spi_lld_exchange(SPIDriver *spip, size_t n,
- const void *txbuf, void *rxbuf) {
-
- spip->rxptr = rxbuf;
- spip->txptr = txbuf;
- spip->rxcnt = spip->txcnt = n;
- SPI->ICR = SPI_ICR_TXEI | SPI_ICR_RXEI | SPI_ICR_ERRIE;
-}
-
-/**
- * @brief Sends data over the SPI bus.
- * @details This asynchronous function starts a transmit operation.
- * @post At the end of the operation the configured callback is invoked.
- * @note The buffers are organized as uint8_t arrays for data sizes below or
- * equal to 8 bits else it is organized as uint16_t arrays.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- * @param[in] n number of words to send
- * @param[in] txbuf the pointer to the transmit buffer
- *
- * @notapi
- */
-void spi_lld_send(SPIDriver *spip, size_t n, const void *txbuf) {
-
- spip->rxptr = NULL;
- spip->txptr = txbuf;
- spip->rxcnt = spip->txcnt = n;
- SPI->ICR = SPI_ICR_TXEI | SPI_ICR_RXEI | SPI_ICR_ERRIE;
-}
-
-/**
- * @brief Receives data from the SPI bus.
- * @details This asynchronous function starts a receive operation.
- * @post At the end of the operation the configured callback is invoked.
- * @note The buffers are organized as uint8_t arrays for data sizes below or
- * equal to 8 bits else it is organized as uint16_t arrays.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- * @param[in] n number of words to receive
- * @param[out] rxbuf the pointer to the receive buffer
- *
- * @notapi
- */
-void spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf) {
-
- spip->rxptr = rxbuf;
- spip->txptr = NULL;
- spip->rxcnt = spip->txcnt = n;
- SPI->ICR = SPI_ICR_TXEI | SPI_ICR_RXEI | SPI_ICR_ERRIE;
-}
-
-/**
- * @brief Exchanges one frame using a polled wait.
- * @details This synchronous function exchanges one frame using a polled
- * synchronization method. This function is useful when exchanging
- * small amount of data on high speed channels, usually in this
- * situation is much more efficient just wait for completion using
- * polling than suspending the thread waiting for an interrupt.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- * @param[in] frame the data frame to send over the SPI bus
- * @return The received data frame from the SPI bus.
- */
-uint8_t spi_lld_polled_exchange(SPIDriver *spip, uint8_t frame) {
-
- (void)spip;
-
- SPI->DR = (uint32_t)frame;
- while ((SPI->SR & SPI_SR_RXNE) == 0)
- ;
- return (uint16_t)SPI->DR;
-}
-
-#endif /* HAL_USE_SPI */
-
-/** @} */
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