diff options
Diffstat (limited to 'os/hal/ports/STM32/LLD/QUADSPIv1/hal_qspi_lld.c')
| -rw-r--r-- | os/hal/ports/STM32/LLD/QUADSPIv1/hal_qspi_lld.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/LLD/QUADSPIv1/hal_qspi_lld.c b/os/hal/ports/STM32/LLD/QUADSPIv1/hal_qspi_lld.c new file mode 100644 index 000000000..1b7eb5491 --- /dev/null +++ b/os/hal/ports/STM32/LLD/QUADSPIv1/hal_qspi_lld.c @@ -0,0 +1,212 @@ +/*
+ ChibiOS - Copyright (C) 2006..2016 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 QUADSPIv1/hal_qspi_lld.c
+ * @brief STM32 QSPI subsystem low level driver source.
+ *
+ * @addtogroup QSPI
+ * @{
+ */
+
+#include "hal.h"
+
+#if HAL_USE_QSPI || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+#define SPI1_RX_DMA_CHANNEL \
+ STM32_DMA_GETCHANNEL(STM32_QSPI_QUADSPI1_DMA_STREAM, \
+ STM32_QUADSPI1_RX_DMA_CHN)
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/** @brief SPI1 driver identifier.*/
+#if STM32_QSPI_USE_QUADSPI1 || defined(__DOXYGEN__)
+SPIDriver QSPID1;
+#endif
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Shared service routine.
+ *
+ * @param[in] qspip pointer to the @p QSPIDriver object
+ * @param[in] flags pre-shifted content of the ISR register
+ */
+static void qspi_lld_serve_dma_interrupt(QSPIDriver *qspip, uint32_t flags) {
+
+ /* DMA errors handling.*/
+#if defined(STM32_QSPI_DMA_ERROR_HOOK)
+ if ((flags & (STM32_DMA_ISR_TEIF | STM32_DMA_ISR_DMEIF)) != 0) {
+ STM32_QSPI_DMA_ERROR_HOOK(qspip);
+ }
+#else
+ (void)flags;
+#endif
+}
+
+/**
+ * @brief Shared service routine.
+ *
+ * @param[in] qspip pointer to the @p QSPIDriver object
+ */
+static void qspi_lld_serve_interrupt(QSPIDriver *qspip) {
+
+ /* Stop everything.*/
+ dmaStreamDisable(qspip->dma);
+
+ /* Portable QSPI ISR code defined in the high level driver, note, it is
+ a macro.*/
+ _qspi_isr_code(qspip);
+}
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level SPI driver initialization.
+ *
+ * @notapi
+ */
+void qspi_lld_init(void) {
+
+#if STM32_QSPI_USE_QUADSPI1
+ qspiObjectInit(&QSPID1);
+ QSPID1.spi = SPI1;
+ QSPID1.dma = STM32_DMA_STREAM(STM32_QSPI_QUADSPI1_DMA_STREAM);
+ QSPID1.dmamode = STM32_DMA_CR_CHSEL(SPI1_RX_DMA_CHANNEL) |
+ STM32_DMA_CR_PL(STM32_QSPI_QUADSPI1_DMA_PRIORITY) |
+ STM32_DMA_CR_PSIZE_BYTE |
+ STM32_DMA_CR_MSIZE_BYTE |
+ STM32_DMA_CR_MINC |
+ STM32_DMA_CR_DMEIE |
+ STM32_DMA_CR_TEIE;
+#endif
+}
+
+/**
+ * @brief Configures and activates the QSPI peripheral.
+ *
+ * @param[in] qspip pointer to the @p QSPIDriver object
+ *
+ * @notapi
+ */
+void qspi_lld_start(QSPIDriver *qspip) {
+ uint32_t ds;
+
+ /* If in stopped state then enables the SPI and DMA clocks.*/
+ if (qspip->state == QSPI_STOP) {
+#if STM32_SPI_USE_SPI1
+ if (&SPID1 == qspip) {
+ rccEnableQUADSPI1(FALSE);
+ }
+#endif
+
+ /* QSPI setup and enable.*/
+// spip->spi->CR1 = 0;
+// spip->spi->CR1 = spip->config->cr1 | SPI_CR1_MSTR;
+// spip->spi->CR2 = spip->config->cr2 | SPI_CR2_FRXTH | SPI_CR2_SSOE |
+// SPI_CR2_RXDMAEN | SPI_CR2_TXDMAEN;
+// spip->spi->CR1 |= SPI_CR1_SPE;
+}
+
+/**
+ * @brief Deactivates the QSPI peripheral.
+ *
+ * @param[in] qspip pointer to the @p QSPIDriver object
+ *
+ * @notapi
+ */
+void qspi_lld_stop(QSPIDriver *qspip) {
+
+ /* If in ready state then disables the SPI clock.*/
+ if (qspip->state == QSPI_READY) {
+
+ /* QSPI disable.*/
+// spip->spi->CR1 = 0;
+// spip->spi->CR2 = 0;
+ dmaStreamRelease(qspip->dma);
+
+#if STM32_QSPI_USE_QUADSPI1
+ if (&QSPID1 == qspip)
+ rccDisableQUADSPI1(FALSE);
+#endif
+ }
+}
+
+/**
+ * @brief Sends data over the QSPI bus.
+ * @details This asynchronous function starts a transmit operation.
+ * @post At the end of the operation the configured callback is invoked.
+ *
+ * @param[in] qspip pointer to the @p QSPIDriver object
+ * @param[in] cmd pointer to the command descriptor
+ * @param[in] n number of words to send
+ * @param[in] txbuf the pointer to the transmit buffer
+ *
+ * @notapi
+ */
+void qspi_lld_send(QSPIDriver *qspip, const qspi_command_t *cmdp,
+ size_t n, const uint8_t *txbuf) {
+
+ dmaStreamSetMemory0(qspip->dma, txbuf);
+ dmaStreamSetTransactionSize(qspip->dma, n);
+ dmaStreamSetMode(qspip->dma, qspip->dmamode | STM32_DMA_CR_DIR_M2P);
+
+ dmaStreamEnable(qspip->dma);
+}
+
+/**
+ * @brief Receives data from the QSPI bus.
+ * @details This asynchronous function starts a receive operation.
+ * @post At the end of the operation the configured callback is invoked.
+ *
+ * @param[in] qspip pointer to the @p QSPIDriver object
+ * @param[in] cmd pointer to the command descriptor
+ * @param[in] n number of words to receive
+ * @param[out] rxbuf the pointer to the receive buffer
+ *
+ * @notapi
+ */
+void qspi_lld_receive(QSPIDriver *qspip, const qspi_command_t *cmdp,
+ size_t n, uint8_t *rxbuf) {
+
+ dmaStreamSetMemory0(qspip->dma, rxbuf);
+ dmaStreamSetTransactionSize(qspip->dma, n);
+ dmaStreamSetMode(qspip->dma, qspip->dmamode | STM32_DMA_CR_DIR_P2M);
+
+ dmaStreamEnable(qspip->dmarx);
+}
+
+#endif /* HAL_USE_QSPI */
+
+/** @} */
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