88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/****************************************************************************
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* boards/arm/stm32/stm32f4discovery/src/stm32_st7032.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/i2c/i2c_master.h>
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#include <nuttx/lcd/st7032.h>
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#include "stm32.h"
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#include "stm32f4discovery.h"
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#if defined(CONFIG_I2C) && defined(CONFIG_STM32_I2C1) && \
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defined(CONFIG_LCD_ST7032)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define ST7032_I2C_PORTNO 1 /* On I2C1 */
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_st7032init
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*
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* Description:
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* Initialize the st7032 display
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*
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* Input Parameters:
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* devpath - The full path to the driver to register. E.g., "/dev/disp0"
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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int stm32_st7032init(const char *devpath)
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{
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struct i2c_master_s *i2c;
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int ret;
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i2c = stm32_i2cbus_initialize(ST7032_I2C_PORTNO);
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if (i2c == NULL)
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{
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return -ENODEV;
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}
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/* Register the ST7032 Driver at the specified location. */
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ret = st7032_register(devpath, i2c);
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if (ret < 0)
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{
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lcderr("ERROR: st7032_register(%s) failed: %d\n",
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devpath, ret);
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return ret;
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}
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return OK;
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}
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#endif /* CONFIG_I2C && CONFIG_LEDS_ST7032 */
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