boards/stm32f0l0g0: add ssd1306 to board common logic

boards/arm/stm32f0l0g0/common/include/stm32_ssd1306.h

@@ -0,0 +1,80 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/common/include/stm32_ssd1306.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.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_ARM_STM32F0L0G0_COMMON_INCLUDE_STM32_SSD1306_H
+#define __BOARDS_ARM_STM32F0L0G0_COMMON_INCLUDE_STM32_SSD1306_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_ssd1306_initialize
+ *
+ * Description:
+ *   Initialize and register the device
+ *
+ * Input Parameters:
+ *   busno - The I2C or SPI bus number
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int board_ssd1306_initialize(int busno);
+
+/****************************************************************************
+ * Name: board_ssd1306_getdev
+ *
+ * Description:
+ *   Get the SSD1306 device driver instance
+ *
+ * Returned Value:
+ *   Pointer to the instance
+ *
+ ****************************************************************************/
+
+struct lcd_dev_s *board_ssd1306_getdev(void);
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BOARDS_ARM_STM32F0L0G0_COMMON_INCLUDE_STM32_SSD1306_H */

boards/arm/stm32f0l0g0/common/src/Make.defs

@@ -20,6 +20,10 @@
 
 ifeq ($(CONFIG_ARCH_BOARD_COMMON),y)
 
+ifeq ($(CONFIG_LCD_SSD1306),y)
+  CSRCS += stm32_ssd1306.c
+endif
+
 DEPPATH += --dep-path src
 VPATH += :src
 CFLAGS += $(shell $(INCDIR) "$(CC)" $(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src)

boards/arm/stm32f0l0g0/common/src/stm32_ssd1306.c

@@ -0,0 +1,161 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/common/src/stm32_ssd1306.c
+ *
+ * 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
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#include <nuttx/board.h>
+#include <nuttx/lcd/lcd.h>
+#include <nuttx/lcd/ssd1306.h>
+#include <nuttx/i2c/i2c_master.h>
+#include <nuttx/spi/spi.h>
+
+#include "stm32_i2c.h"
+#include "stm32_spi.h"
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static struct lcd_dev_s    *g_lcddev;
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_ssd1306_initialize
+ *
+ * Description:
+ *   Initialize and register the device. I2C version.
+ *
+ * Input Parameters:
+ *   busno - The I2C bus number
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+#ifdef CONFIG_LCD_SSD1306_I2C
+int board_ssd1306_initialize(int busno)
+{
+  struct i2c_master_s *i2c;
+  const int devno = 0;
+
+  /* Initialize I2C */
+
+  i2c = stm32_i2cbus_initialize(busno);
+  if (!i2c)
+    {
+      lcderr("ERROR: Failed to initialize I2C port %d\n", busno);
+      return -ENODEV;
+    }
+
+  /* Bind the I2C port to the OLED */
+
+  g_lcddev = ssd1306_initialize(i2c, NULL, devno);
+  if (!g_lcddev)
+    {
+      lcderr("ERROR: Failed to bind I2C port %d to OLED %d\n", busno, devno);
+      return -ENODEV;
+    }
+  else
+    {
+      lcdinfo("Bound I2C port %d to OLED %d\n", busno, devno);
+
+      /* And turn the OLED on */
+
+      g_lcddev->setpower(g_lcddev, CONFIG_LCD_MAXPOWER);
+      return OK;
+    }
+}
+#endif
+
+/****************************************************************************
+ * Name: board_ssd1306_initialize
+ *
+ * Description:
+ *   Initialize and register the device. SPI version.
+ *
+ * Input Parameters:
+ *   busno - The SPI bus number
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+#ifdef CONFIG_LCD_SSD1306_SPI
+int board_ssd1306_initialize(int busno)
+{
+  struct spi_dev_s *spi;
+  const int devno = 0;
+
+  /* Initialize SPI */
+
+  spi = stm32_spibus_initialize(busno);
+  if (!spi)
+    {
+      lcderr("ERROR: Failed to initialize SPI port %d\n", busno);
+      return -ENODEV;
+    }
+
+  /* Bind the SPI port to the OLED */
+
+  g_lcddev = ssd1306_initialize(spi, NULL, devno);
+  if (!g_lcddev)
+    {
+      lcderr("ERROR: Failed to bind SPI port %d to OLED %d\n", busno, devno);
+      return -ENODEV;
+    }
+  else
+    {
+      lcdinfo("Bound SPI port %d to OLED %d\n", busno, devno);
+
+      /* And turn the OLED on */
+
+      g_lcddev->setpower(g_lcddev, CONFIG_LCD_MAXPOWER);
+
+      ssd1306_fill(g_lcddev, 0xff);
+
+      return OK;
+    }
+}
+#endif
+
+/****************************************************************************
+ * Name: board_ssd1306_getdev
+ *
+ * Description:
+ *   Get the SSD1306 device driver instance
+ *
+ * Returned Value:
+ *   Pointer to the instance
+ *
+ ****************************************************************************/
+
+struct lcd_dev_s *board_ssd1306_getdev(void)
+{
+  return g_lcddev;
+}