1 files changed, 231 insertions, 0 deletions

diff --git a/lib/chibios/os/hal/ports/ADUCM/ADUCM36x/hal_spi_lld.h b/lib/chibios/os/hal/ports/ADUCM/ADUCM36x/hal_spi_lld.h
new file mode 100644
index 000000000..21a4e9251
--- /dev/null
+++ b/lib/chibios/os/hal/ports/ADUCM/ADUCM36x/hal_spi_lld.h
@@ -0,0 +1,231 @@
+/*
+    ChibiOS - Copyright (C) 2019 Rocco Marco Guglielmi
+
+    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    ADUCM36x/hal_spi_lld.h
+ * @brief   ADUCM SPI subsystem low level driver header.
+ *
+ * @addtogroup SPI
+ * @{
+ */
+
+#ifndef HAL_SPI_LLD_H
+#define HAL_SPI_LLD_H
+
+#if HAL_USE_SPI || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants.                                                         */
+/*===========================================================================*/
+
+/**
+ * @brief   Circular mode support flag.
+ */
+#define SPI_SUPPORTS_CIRCULAR           FALSE
+
+/**
+ * @name    Register helpers not found in ADI headers
+ * @{
+ */
+#define ADUCM_SPI_CON_ENABLE            0x0001U
+#define ADUCM_SPI_CON_MASEN             0x0002U
+#define ADUCM_SPI_CON_CPHA              0x0004U
+#define ADUCM_SPI_CON_CPOL              0x0008U
+#define ADUCM_SPI_CON_WOM               0x0010U
+#define ADUCM_SPI_CON_LSB               0x0020U
+#define ADUCM_SPI_CON_TIM               0x0040U
+#define ADUCM_SPI_CON_ZEN               0x0080U
+#define ADUCM_SPI_CON_RXOF              0x0100U
+#define ADUCM_SPI_CON_OEN               0x0200U
+#define ADUCM_SPI_CON_LOOPBACK          0x0400U
+#define ADUCM_SPI_CON_CON               0x0800U
+#define ADUCM_SPI_CON_RFLUSH            0x1000U
+#define ADUCM_SPI_CON_TFLUSH            0x2000U
+#define ADUCM_SPI_CON_MOD_MASK          0xC000U
+#define ADUCM_SPI_CON_MOD_TX1RX1        0x0000U
+#define ADUCM_SPI_CON_MOD_TX2RX2        0x4000U
+#define ADUCM_SPI_CON_MOD_TX3RX3        0x8000U
+#define ADUCM_SPI_CON_MOD_TX4RX4        0xC000U
+
+#define ADUCM_SPI_DIV_0                 0x0001U
+#define ADUCM_SPI_DIV_1                 0x0002U
+#define ADUCM_SPI_DIV_2                 0x0004U
+#define ADUCM_SPI_DIV_3                 0x0008U
+#define ADUCM_SPI_DIV_4                 0x00F0U
+/** @} */
+
+/*===========================================================================*/
+/* Driver pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/**
+ * @name    Configuration options
+ * @{
+ */
+/**
+ * @brief   SPI0 driver enable switch.
+ * @details If set to @p TRUE the support for SPI0 is included.
+ * @note    The default is @p FALSE.
+ */
+#if !defined(ADUCM_SPI_USE_SPI0) || defined(__DOXYGEN__)
+#define ADUCM_SPI_USE_SPI0                  FALSE
+#endif
+
+/**
+ * @brief   SPI1 driver enable switch.
+ * @details If set to @p TRUE the support for SPI1 is included.
+ * @note    The default is @p FALSE.
+ */
+#if !defined(ADUCM_SPI_USE_SPI1) || defined(__DOXYGEN__)
+#define ADUCM_SPI_USE_SPI1                  FALSE
+#endif
+
+/**
+ * @brief   SPI0 interrupt priority level setting.
+ */
+#if !defined(ADUCM_SPI_SPI0_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define ADUCM_SPI_SPI0_IRQ_PRIORITY         5
+#endif
+
+/**
+ * @brief   SPI1 interrupt priority level setting.
+ */
+#if !defined(ADUCM_SPI_SPI1_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define ADUCM_SPI_SPI1_IRQ_PRIORITY         5
+#endif
+
+/**
+ * @brief   Enable SPI DMA support
+ */
+#if !defined(ADUCM_SPI_USE_DMA) || defined(__DOXYGEN__)
+#define ADUCM_SPI_USE_DMA                   FALSE
+#endif
+
+/** @} */
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+#if !ADUCM_SPI_USE_SPI0 && !ADUCM_SPI_USE_SPI1
+#error "SPI driver activated but no SPI peripheral assigned"
+#endif
+
+#if ADUCM_SPI_USE_SPI0 &&                                                   \
+    !OSAL_IRQ_IS_VALID_PRIORITY(ADUCM_SPI_SPI0_IRQ_PRIORITY)
+#error "Invalid IRQ priority assigned to SPI0"
+#endif
+
+#if ADUCM_SPI_USE_SPI1 &&                                                   \
+    !OSAL_IRQ_IS_VALID_PRIORITY(ADUCM_SPI_SPI1_IRQ_PRIORITY)
+#error "Invalid IRQ priority assigned to SPI1"
+#endif
+
+#if ADUCM_SPI_USE_DMA
+#error "ADuCM SPI driver implementation does not supports DMA yet."
+#endif
+
+#if ADUCM_SPI_USE_DMA && ADUCM_SPI_USE_SPI0
+#error "ADuCM SPI0 does not supports DMA."
+#endif
+
+#if (ADUCM_SPI_USE_DMA == TRUE) && !defined(ADUCM_DMA_REQUIRED)
+#define ADUCM_DMA_REQUIRED
+#endif
+
+#if (SPI_USE_CIRCULAR == TRUE) && (SPI_SUPPORTS_CIRCULAR == FALSE)
+#error "ADuCM SPI does not support circular mode."
+#endif
+
+#if SPI_SELECT_MODE == SPI_SELECT_MODE_LLD
+#error "SPI_SELECT_MODE_LLD not supported by this driver"
+#endif
+
+/*===========================================================================*/
+/* Driver data structures and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver macros.                                                            */
+/*===========================================================================*/
+
+/**
+ * @brief   Low level fields of the SPI driver structure.
+ */
+#if ADUCM_SPI_USE_DMA
+#define spi_lld_driver_fields                                               \
+  /* Empty placeholder for DMA based implementation. */
+#else
+#define spi_lld_driver_fields                                               \
+  /* Pointer to the SPIx registers block.*/                                 \
+  ADI_SPI_TypeDef           *spi;                                           \
+  /* Receive buffer pointer.*/                                              \
+  uint8_t                   *rxbuf;                                         \
+  /* Transmission buffer pointer.*/                                         \
+  uint8_t                   *txbuf;                                         \
+  /* Transfert size.*/                                                      \
+  uint32_t                  size;
+#endif /* ADUCM_SPI_USE_DMA */
+
+/**
+ * @brief   Low level fields of the SPI configuration structure.
+ */
+#define spi_lld_config_fields                                               \
+  /* SPIxCON register initialization data.*/                                \
+  uint16_t                  con;                                            \
+  /* SPIxDIV register initialization data.*/                                \
+  uint16_t                  div
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#if ADUCM_SPI_USE_SPI0 && !defined(__DOXYGEN__)
+extern SPIDriver SPID0;
+#endif
+
+#if ADUCM_SPI_USE_SPI1 && !defined(__DOXYGEN__)
+extern SPIDriver SPID1;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void spi_lld_init(void);
+  void spi_lld_start(SPIDriver *spip);
+  void spi_lld_stop(SPIDriver *spip);
+#if (SPI_SELECT_MODE == SPI_SELECT_MODE_LLD) || defined(__DOXYGEN__)
+  void spi_lld_select(SPIDriver *spip);
+  void spi_lld_unselect(SPIDriver *spip);
+#endif
+  void spi_lld_ignore(SPIDriver *spip, size_t n);
+  void spi_lld_exchange(SPIDriver *spip, size_t n,
+                        const void *txbuf, void *rxbuf);
+  void spi_lld_send(SPIDriver *spip, size_t n, const void *txbuf);
+  void spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf);
+#if (SPI_SUPPORTS_CIRCULAR == TRUE) || defined(__DOXYGEN__)
+  void spi_lld_abort(SPIDriver *spip);
+#endif
+  uint8_t spi_lld_polled_exchange(SPIDriver *spip, uint8_t frame);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_SPI */
+
+#endif /* HAL_SPI_LLD_H */
+
+/** @} */