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/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* STM32L Discovery board-specific configuration */
#include "board.h"
#include "gpio.h"
#include "registers.h"
#include "util.h"
/* GPIO signal list. Must match order from enum gpio_signal. */
const struct gpio_info gpio_list[GPIO_COUNT] = {
/* Inputs with interrupt handlers are first for efficiency */
{"USER_BUTTON", GPIO_A, (1<<0), GPIO_INT_BOTH, NULL},
{"KB_COL00", GPIO_C, (1<<8), GPIO_INT_BOTH, matrix_interrupt},
{"KB_COL01", GPIO_C, (1<<9), GPIO_INT_BOTH, matrix_interrupt},
{"KB_COL02", GPIO_C, (1<<10), GPIO_INT_BOTH, matrix_interrupt},
{"KB_COL03", GPIO_C, (1<<11), GPIO_INT_BOTH, matrix_interrupt},
{"KB_COL04", GPIO_C, (1<<12), GPIO_INT_BOTH, matrix_interrupt},
{"KB_COL05", GPIO_C, (1<<14), GPIO_INT_BOTH, matrix_interrupt},
{"KB_COL06", GPIO_C, (1<<15), GPIO_INT_BOTH, matrix_interrupt},
{"KB_COL07", GPIO_D, (1<<2), GPIO_INT_BOTH, matrix_interrupt},
/* Other inputs */
/* Outputs */
{"BLUE_LED", GPIO_B, (1<<6), GPIO_OUT_LOW, NULL},
{"GREEN_LED", GPIO_B, (1<<7), GPIO_OUT_LOW, NULL},
};
void configure_board(void)
{
/* Enable all GPIOs clocks in normal run-mode, enable keyboard
* GPIO clocks in low-power (sleep) mode.
* TODO: more fine-grained enabling for power saving
*/
STM32L_RCC_AHBENR |= 0x3f;
STM32L_RCC_AHBLPENR |= 0x0e;
#if CONFIG_CONSOLE_UART == 1
/* Select Alternate function for USART1 on pins PA9/PA10 */
gpio_set_alternate_function(GPIO_A, (1<<9) | (1<<10), GPIO_ALT_USART);
#elif CONFIG_CONSOLE_UART == 3
/* Select Alternate function for USART3 on pins PB10/PB11 */
gpio_set_alternate_function(GPIO_B, (1<<10) | (1<<11), GPIO_ALT_USART);
#endif
}
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