arch/risc-v/bl602: spi_master support.

arch/risc-v/src/bl602/Kconfig

@@ -42,6 +42,9 @@ config BL602_PWM0
 config BL602_I2C0
 	bool "I2C0"
 
+config BL602_SPI0
+	bool "SPI0"
+
 config BL602_SPIFLASH
 	bool "SPI Flash"
 	default n

arch/risc-v/src/bl602/Make.defs

@@ -56,6 +56,10 @@ ifeq ($(CONFIG_I2C),y)
 CHIP_CSRCS += bl602_i2c.c
 endif
 
+ifeq ($(CONFIG_SPI),y)                                                                               
+CHIP_CSRCS += bl602_spi.c
+endif
+
 ifeq ($(CONFIG_TIMER),y)
 CHIP_CSRCS  += bl602_tim_lowerhalf.c
 endif

arch/risc-v/src/bl602/bl602_spi.h

@@ -0,0 +1,88 @@
+/****************************************************************************
+ * arch/risc-v/src/bl602/bl602_spi.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#ifndef __ARCH_RISCV_SRC_BL602_BL602_SPI_H
+#define __ARCH_RISCV_SRC_BL602_BL602_SPI_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+#ifdef CONFIG_BL602_SPI0
+
+#include <nuttx/spi/spi.h>
+#include <nuttx/spi/spi_transfer.h>
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: bl602_spibus_initialize
+ *
+ * Description:
+ *   Initialize the selected SPI bus
+ *
+ * Input Parameters:
+ *   Port number (for hardware that has multiple SPI interfaces)
+ *
+ * Returned Value:
+ *   Valid SPI device structure reference on success; a NULL on failure
+ *
+ ****************************************************************************/
+
+FAR struct spi_dev_s *bl602_spibus_initialize(int port);
+
+/****************************************************************************
+ * Name: bl602_spibus_uninitialize
+ *
+ * Description:
+ *   Uninitialize an SPI bus
+ *
+ ****************************************************************************/
+
+int bl602_spibus_uninitialize(FAR struct spi_dev_s *dev);
+
+#endif /* CONFIG_BL602_SPI0 */
+
+#ifdef __cplusplus
+}
+#endif
+#undef EXTERN
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_RISCV_SRC_BL602_BL602_SPI_H */

boards/risc-v/bl602/bl602evb/configs/spi/defconfig

@@ -0,0 +1,79 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NSH_DISABLEBG is not set
+# CONFIG_NSH_DISABLE_LOSMART is not set
+# CONFIG_NSH_DISABLE_UNAME is not set
+CONFIG_ARCH="risc-v"
+CONFIG_ARCH_BOARD="bl602evb"
+CONFIG_ARCH_BOARD_BL602EVB=y
+CONFIG_ARCH_CHIP="bl602"
+CONFIG_ARCH_CHIP_BL602=y
+CONFIG_ARCH_INTERRUPTSTACK=8192
+CONFIG_ARCH_RISCV=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BINFMT_DISABLE=y
+CONFIG_BL602_HAVE_UART0=y
+CONFIG_BL602_SPI0=y
+CONFIG_BL602_TIMER0=y
+CONFIG_BOARD_LOOPSPERMSEC=10000
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_FEATURES=y
+CONFIG_DEBUG_FULLOPT=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DEFAULT_SMALL=y
+CONFIG_DEV_ZERO=y
+CONFIG_DISABLE_MQUEUE=y
+CONFIG_EXAMPLES_HELLO=y
+CONFIG_EXAMPLES_HELLO_STACKSIZE=8192
+CONFIG_EXAMPLES_TIMER=y
+CONFIG_FS_PROCFS=y
+CONFIG_IDLETHREAD_STACKSIZE=8192
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_PERROR_STDOUT=y
+CONFIG_LIBC_STRERROR=y
+CONFIG_MAX_TASKS=8
+CONFIG_NFILE_DESCRIPTORS=6
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_DISABLE_CD=y
+CONFIG_NSH_DISABLE_CP=y
+CONFIG_NSH_DISABLE_IFUPDOWN=y
+CONFIG_NSH_DISABLE_MKDIR=y
+CONFIG_NSH_DISABLE_RM=y
+CONFIG_NSH_DISABLE_RMDIR=y
+CONFIG_NSH_DISABLE_UMOUNT=y
+CONFIG_NSH_FILEIOSIZE=64
+CONFIG_NSH_MAXARGUMENTS=16
+CONFIG_NSH_STRERROR=y
+CONFIG_PREALLOC_TIMERS=0
+CONFIG_PTHREAD_STACK_DEFAULT=8192
+CONFIG_RAM_SIZE=134217728
+CONFIG_RAM_START=0xc0800000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_RV32IM_CUSTOM_IRQ_SUPPORT=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SPI=y
+CONFIG_STACK_COLORATION=y
+CONFIG_START_DAY=20
+CONFIG_START_MONTH=3
+CONFIG_START_YEAR=2020
+CONFIG_STDIO_DISABLE_BUFFERING=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_SYSTEM_SPITOOL=y
+CONFIG_TASK_NAME_SIZE=12
+CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=8192
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TIMER=y
+CONFIG_TIMER_ARCH=y
+CONFIG_UART0_BAUD=2000000
+CONFIG_UART0_RXBUFSIZE=128
+CONFIG_UART0_SERIAL_CONSOLE=y
+CONFIG_UART0_TXBUFSIZE=128
+CONFIG_USERMAIN_STACKSIZE=8192
+CONFIG_USER_ENTRYPOINT="nsh_main"

boards/risc-v/bl602/bl602evb/include/board.h

@@ -75,6 +75,13 @@
 #define BOARD_I2C_SCL (GPIO_INPUT | GPIO_PULLUP | GPIO_FUNC_I2C | GPIO_PIN4)
 #define BOARD_I2C_SDA (GPIO_INPUT | GPIO_PULLUP | GPIO_FUNC_I2C | GPIO_PIN3)
 
+/* SPI Configuration */
+
+#define BOARD_SPI_CS   (GPIO_INPUT | GPIO_PULLUP | GPIO_FUNC_SPI | GPIO_PIN2)
+#define BOARD_SPI_MOSI (GPIO_INPUT | GPIO_PULLUP | GPIO_FUNC_SPI | GPIO_PIN1)
+#define BOARD_SPI_MISO (GPIO_INPUT | GPIO_PULLUP | GPIO_FUNC_SPI | GPIO_PIN0)
+#define BOARD_SPI_CLK  (GPIO_INPUT | GPIO_PULLUP | GPIO_FUNC_SPI | GPIO_PIN3)
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/

boards/risc-v/bl602/bl602evb/src/bl602_bringup.c

@@ -40,6 +40,7 @@
 #include <bl602_wdt_lowerhalf.h>
 #include <bl602_gpio.h>
 #include <bl602_i2c.h>
+#include <bl602_spi.h>
 
 #if defined(CONFIG_BL602_SPIFLASH)
 #include <bl602_spiflash.h>
@@ -78,6 +79,9 @@ int bl602_bringup(void)
 #endif
 #ifdef CONFIG_I2C
   struct i2c_master_s *i2c_bus;
+#endif
+#ifdef CONFIG_SPI
+  struct spi_dev_s *spi_bus;
 #endif
   int ret = OK;
 
@@ -179,6 +183,11 @@ int bl602_bringup(void)
   i2c_register(i2c_bus, 0);
 #endif
 
+#ifdef CONFIG_SPI
+  spi_bus = bl602_spibus_initialize(0);
+  spi_register(spi_bus, 0);
+#endif
+
 #ifdef CONFIG_BL602_SPIFLASH
   mtd_part = bl602_spiflash_alloc_mtdpart();