7068fb63cb
Platform gpio driver now uses the nrfx library for gpio manipulation. This allows utilization of second gpio bank present on some parts and handling of errata.
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/*
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* Copyright (c) 2016 Eric Holland
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*
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* Use of this source code is governed by a MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT
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*/
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#include <assert.h>
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#include <lk/debug.h>
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#include <lk/err.h>
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#include <dev/gpio.h>
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#include <nrfx.h>
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#include <hal/nrf_gpio.h>
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int gpio_config(unsigned nr, unsigned flags) {
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if (!nrf_gpio_pin_present_check(nr)) {
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return ERR_INVALID_ARGS;
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}
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if (flags & GPIO_OUTPUT) {
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nrf_gpio_cfg_output(nr);
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} else { // GPIO_INPUT
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nrf_gpio_pin_pull_t pull;
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if (flags & GPIO_PULLUP) {
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pull = NRF_GPIO_PIN_PULLUP;
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} else if (flags & GPIO_PULLDOWN) {
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pull = NRF_GPIO_PIN_PULLDOWN;
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} else {
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pull = NRF_GPIO_PIN_NOPULL;
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}
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nrf_gpio_cfg_input(nr, pull);
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}
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return NO_ERROR;
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}
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void gpio_set(unsigned nr, unsigned on) {
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DEBUG_ASSERT(nrf_gpio_pin_present_check(nr));
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nrf_gpio_pin_write(nr, on);
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}
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int gpio_get(unsigned nr) {
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DEBUG_ASSERT(nrf_gpio_pin_present_check(nr));
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return (int)nrf_gpio_pin_read(nr);
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}
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