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Posted to commits@nuttx.apache.org by xi...@apache.org on 2021/09/15 04:02:32 UTC
[incubator-nuttx] branch master updated: esp32-wrover: Add support
to LCD1602 with I2C Backpack
This is an automated email from the ASF dual-hosted git repository.
xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
The following commit(s) were added to refs/heads/master by this push:
new 60d4ee1 esp32-wrover: Add support to LCD1602 with I2C Backpack
60d4ee1 is described below
commit 60d4ee11eef88972f7eeffd9d0b1ca5967395964
Author: Alan C. Assis <ac...@gmail.com>
AuthorDate: Tue Sep 14 16:50:33 2021 -0300
esp32-wrover: Add support to LCD1602 with I2C Backpack
---
.../esp32/common/include/esp32_lcd_backpack.h | 83 ++++++++++++++++++
boards/xtensa/esp32/common/src/Make.defs | 4 +
.../xtensa/esp32/common/src/esp32_lcd_backpack.c | 98 ++++++++++++++++++++++
.../esp32-wrover-kit/configs/lcd1602/defconfig | 51 +++++++++++
.../esp32/esp32-wrover-kit/src/esp32_bringup.c | 15 ++++
5 files changed, 251 insertions(+)
diff --git a/boards/xtensa/esp32/common/include/esp32_lcd_backpack.h b/boards/xtensa/esp32/common/include/esp32_lcd_backpack.h
new file mode 100644
index 0000000..7a3ebfa
--- /dev/null
+++ b/boards/xtensa/esp32/common/include/esp32_lcd_backpack.h
@@ -0,0 +1,83 @@
+/****************************************************************************
+ * boards/xtensa/esp32/common/include/esp32_lcd_backpack.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 __ESP32_LCD_BACKPACK_H
+#define __ESP32_LCD_BACKPACK_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_lcd_backpack_init
+ *
+ * Description:
+ * Initialize the LCD1602 display controlled by Backpack with PCF8574
+ *
+ * Input Parameters:
+ * devpath - The full path to the driver to register. E.g., "/dev/slcd0"
+ *
+ * Returned Value:
+ * Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int board_lcd_backpack_init(int devno, int busno, int rows, int cols);
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ESP3232_LCD_BACKPACK_H */
diff --git a/boards/xtensa/esp32/common/src/Make.defs b/boards/xtensa/esp32/common/src/Make.defs
index d8dfeb5..7ff7021 100644
--- a/boards/xtensa/esp32/common/src/Make.defs
+++ b/boards/xtensa/esp32/common/src/Make.defs
@@ -54,6 +54,10 @@ ifeq ($(CONFIG_CAN_MCP2515),y)
CSRCS += esp32_mcp2515.c
endif
+ifeq ($(CONFIG_LCD_BACKPACK),y)
+ CSRCS += esp32_lcd_backpack.c
+endif
+
ifeq ($(CONFIG_LCD_ILI9341),y)
CSRCS += esp32_ili9341.c
endif
diff --git a/boards/xtensa/esp32/common/src/esp32_lcd_backpack.c b/boards/xtensa/esp32/common/src/esp32_lcd_backpack.c
new file mode 100644
index 0000000..137165b
--- /dev/null
+++ b/boards/xtensa/esp32/common/src/esp32_lcd_backpack.c
@@ -0,0 +1,98 @@
+/****************************************************************************
+ * boards/xtensa/esp32/common/src/esp32_lcd_backpack.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 <errno.h>
+#include <debug.h>
+#include <syslog.h>
+#include <stdio.h>
+
+#include <nuttx/i2c/i2c_master.h>
+#include <nuttx/lcd/pcf8574_lcd_backpack.h>
+
+#include "esp32_board_i2c.h"
+#include "esp32_i2c.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_lcd_backpack_init
+ *
+ * Description:
+ * Initialize the LCD1602 display controlled by Backpack with PCF8574
+ *
+ * Input Parameters:
+ * devpath - The full path to the driver to register. E.g., "/dev/slcd0"
+ *
+ * Returned Value:
+ * Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int board_lcd_backpack_init(int devno, int busno, int rows, int cols)
+{
+ FAR struct pcf8574_lcd_backpack_config_s cfg =
+ LCD_I2C_BACKPACK_CFG_SAINSMART;
+ FAR struct i2c_master_s *i2c;
+ char devpath[12];
+ int ret;
+
+ /* Setup the LCD row and cols size.
+ * Note: We are using the LCD_I2C_BACKPACK_CFG_SAINSMART config that
+ * defined the I2C Address to 0x27 to PCF8574. Double check if all
+ * the bits (pins) from PCF8574 connected to the LCD controller
+ * are correct with this LCD CFG definition.
+ */
+
+ cfg.rows = rows;
+ cfg.cols = cols;
+
+ /* Initialize the I2C1 */
+
+ i2c = esp32_i2cbus_initialize(busno);
+ if (i2c == NULL)
+ {
+ return -ENODEV;
+ }
+
+ /* Register the Segment LCD */
+
+ snprintf(devpath, 12, "/dev/slcd%d", devno);
+ ret = pcf8574_lcd_backpack_register(devpath, i2c, &cfg);
+ if (ret < 0)
+ {
+ lcderr("ERROR: pcf8574_lcd_backpack_register(%s) failed: %d\n",
+ devpath, ret);
+ return ret;
+ }
+
+ return OK;
+}
diff --git a/boards/xtensa/esp32/esp32-wrover-kit/configs/lcd1602/defconfig b/boards/xtensa/esp32/esp32-wrover-kit/configs/lcd1602/defconfig
new file mode 100644
index 0000000..9c8b7db
--- /dev/null
+++ b/boards/xtensa/esp32/esp32-wrover-kit/configs/lcd1602/defconfig
@@ -0,0 +1,51 @@
+#
+# 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_ARCH_LEDS is not set
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+# CONFIG_NSH_CMDPARMS is not set
+CONFIG_ARCH="xtensa"
+CONFIG_ARCH_BOARD="esp32-wrover-kit"
+CONFIG_ARCH_BOARD_ESP32_WROVERKIT=y
+CONFIG_ARCH_CHIP="esp32"
+CONFIG_ARCH_CHIP_ESP32=y
+CONFIG_ARCH_CHIP_ESP32WROVER=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARCH_XTENSA=y
+CONFIG_BOARD_LOOPSPERMSEC=16717
+CONFIG_BUILTIN=y
+CONFIG_ESP32_I2C0=y
+CONFIG_ESP32_UART0=y
+CONFIG_EXAMPLES_SLCD=y
+CONFIG_FS_PROCFS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_I2C=y
+CONFIG_IDLETHREAD_STACKSIZE=3072
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LCD_BACKPACK=y
+CONFIG_MM_REGIONS=3
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_RAM_SIZE=114688
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_SLCD=y
+CONFIG_START_DAY=6
+CONFIG_START_MONTH=12
+CONFIG_START_YEAR=2011
+CONFIG_SYSTEM_NSH=y
+CONFIG_UART0_SERIAL_CONSOLE=y
+CONFIG_USER_ENTRYPOINT="nsh_main"
diff --git a/boards/xtensa/esp32/esp32-wrover-kit/src/esp32_bringup.c b/boards/xtensa/esp32/esp32-wrover-kit/src/esp32_bringup.c
index b7517d2..2a6152b 100644
--- a/boards/xtensa/esp32/esp32-wrover-kit/src/esp32_bringup.c
+++ b/boards/xtensa/esp32/esp32-wrover-kit/src/esp32_bringup.c
@@ -94,6 +94,10 @@
# include "esp32_rtc_lowerhalf.h"
#endif
+#ifdef CONFIG_LCD_BACKPACK
+# include "esp32_lcd_backpack.h"
+#endif
+
#include "esp32-wrover-kit.h"
/****************************************************************************
@@ -148,6 +152,17 @@ int esp32_bringup(void)
}
#endif
+#ifdef CONFIG_LCD_BACKPACK
+ /* slcd:0, i2c:0, rows=2, cols=16 */
+
+ ret = board_lcd_backpack_init(0, 0, 2, 16);
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "Failed to initialize PCF8574 LCD, error %d\n", ret);
+ return ret;
+ }
+#endif
+
#ifdef CONFIG_MMCSD
ret = esp32_mmcsd_initialize(0);
if (ret < 0)