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91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
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* Copyright (C) 2021 Gunar Schorcht
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup drivers_mcp47xx
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* @ingroup sys_auto_init_saul
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* @brief Auto initialization of Microchip MCP47xx DAC with I2C interface
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* @author Gunar Schorcht <gunar@schorcht.net>
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* @file
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* @{
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*/
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#include "assert.h"
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#include "log.h"
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#include "saul_reg.h"
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#include "saul/periph.h"
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#include "mcp47xx.h"
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#include "mcp47xx_params.h"
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/**
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* @brief Number of configured MCP47xx DAC devices
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*/
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#define MCP47XX_NUM (sizeof(mcp47xx_params) / sizeof(mcp47xx_params[0]))
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/**
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* @brief Number of configured SAUL MCP47xx DAC channels
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*/
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#define MCP47XX_SAUL_DAC_NUMOF (sizeof(mcp47xx_saul_dac_params) / \
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sizeof(mcp47xx_saul_dac_params[0]))
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/**
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* @brief Number of saul info
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*/
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#define MCP47XX_INFO_NUM (sizeof(mcp47xx_saul_info) / \
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sizeof(mcp47xx_saul_info[0]))
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/**
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* @brief Allocate the memory for the MCP47xx DAC device descriptors
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*/
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mcp47xx_t mcp47xx_devs[MCP47XX_NUM];
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/**
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* @brief Allocate the memory for MCP47xx DAC SAUL registry entries
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*/
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static saul_reg_t mcp47xx_saul_reg_entries[MCP47XX_SAUL_DAC_NUMOF];
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/**
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* @brief Reference the MCP47xx DAC input mode driver struct
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*/
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extern saul_driver_t mcp47xx_dac_in_saul_driver;
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/**
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* @brief Reference to the MCP47xx DAC output mode driver struct
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*/
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extern saul_driver_t mcp47xx_dac_saul_driver;
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void auto_init_mcp47xx(void)
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{
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for (unsigned int i = 0; i < MCP47XX_NUM; i++) {
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LOG_DEBUG("[auto_init_saul] initializing MCP47xx DAC dev #%u\n", i);
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mcp47xx_init(&mcp47xx_devs[i], &mcp47xx_params[i]);
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}
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for (unsigned int i = 0; i < MCP47XX_SAUL_DAC_NUMOF; i++) {
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const mcp47xx_saul_dac_params_t *p = &mcp47xx_saul_dac_params[i];
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LOG_DEBUG("[auto_init_saul] initializing MCP47xx DAC channel #%u\n", i);
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/* check the MCP47xx device index */
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assert(p->dev < MCP47XX_NUM);
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mcp47xx_saul_reg_entries[i].dev = (void *)p;
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mcp47xx_saul_reg_entries[i].name = p->name;
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mcp47xx_saul_reg_entries[i].driver = &mcp47xx_dac_saul_driver;
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/* initialize the MCP47xx pin */
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mcp47xx_dac_init(&mcp47xx_devs[p->dev], p->channel);
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mcp47xx_dac_set(&mcp47xx_devs[p->dev], p->channel, p->initial);
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/* add to registry */
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saul_reg_add(&(mcp47xx_saul_reg_entries[i]));
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}
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}
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