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6d61381d2a
The expandable GPIO API requires the comparison of structured GPIO types. This means that inline functions must be used instead of direct comparisons. For the migration process, drivers must first be changed so that they use the inline comparison functions.
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
/*
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* Copyright (C) 2017 RWTH Aachen
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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_tps6274x
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* @{
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*
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* @file
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* @brief Device driver implementation for the TPS6274x family DC/DC-converter.
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*
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* @author Steffen Robertz <steffen.robertz@rwth-aachen.de>
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* @author Josua Arndt <jarndt@ias.rwth-aachen.de>
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*
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* @}
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*/
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#include "tps6274x.h"
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#include "periph/gpio.h"
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#define ENABLE_DEBUG (0)
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#include "debug.h"
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int tps6274x_init(tps6274x_t *dev, const tps6274x_params_t *params)
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{
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int ret;
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dev->params = *params;
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for (uint8_t i = 0; i < 4; i++) {
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if (gpio_is_valid(dev->params.vsel[i])) {
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ret = gpio_init(dev->params.vsel[i], GPIO_OUT);
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if(ret < 0) {
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return TPS6274X_ERR_INIT;
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}
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}
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}
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if (gpio_is_valid(dev->params.ctrl_pin)) {
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ret = gpio_init(dev->params.ctrl_pin, GPIO_OUT);
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if(ret < 0) {
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return TPS6274X_ERR_INIT;
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}
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}
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return TPS6274X_OK;
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}
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uint16_t tps6274x_switch_voltage(tps6274x_t *dev, uint16_t voltage)
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{
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if (voltage < 1800) {
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voltage = 1800;
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}
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else if (voltage > 3300) {
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voltage = 3300;
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}
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uint8_t vsel = (voltage - 1800) / 100;
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uint8_t vsel_set = 0;
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for (uint8_t i = 0; i < 4; i++) {
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if (gpio_is_valid(dev->params.vsel[i])) {
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gpio_write(dev->params.vsel[i], (vsel & (0x01 << i)));
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/* mark pins that could and had to be set */
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vsel_set |= vsel & (1 << i);
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}
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#if ENABLE_DEBUG
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else {
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printf("[tps6274x] Pin vsel%u is not connected but is required for \
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selected voltage level\n", i + 1);
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}
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#endif
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}
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return ((uint16_t)vsel_set) * 100 + 1800;
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}
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void tps6274x_load_ctrl(tps6274x_t *dev, int status)
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{
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if (gpio_is_valid(dev->params.ctrl_pin)) {
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gpio_write(dev->params.ctrl_pin, status);
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}
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#if ENABLE_DEBUG
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else {
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printf("[TPS6274x] CTRL Pin not defined, no load activation possible\n");
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}
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#endif
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}
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