72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
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/* Copyright 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* STM32L-discovery board configuration */
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#include "common.h"
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#include "gpio.h"
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#include "hooks.h"
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#include "queue_policies.h"
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#include "registers.h"
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#include "task.h"
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#include "usart-stm32f0.h"
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#include "usart_rx_dma.h"
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#include "usart_tx_dma.h"
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#include "util.h"
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void button_event(enum gpio_signal signal);
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#include "gpio_list.h"
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void button_event(enum gpio_signal signal)
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{
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static int count;
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gpio_set_level(GPIO_LED_GREEN, ++count & 0x02);
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}
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void usb_gpio_tick(void)
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{
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static int count;
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gpio_set_level(GPIO_LED_BLUE, ++count & 0x01);
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}
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DECLARE_HOOK(HOOK_TICK, usb_gpio_tick, HOOK_PRIO_DEFAULT);
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/******************************************************************************
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* Setup USART2 as a loopback device, it just echo's back anything sent to it.
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*/
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static struct usart_config const loopback_usart;
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static struct queue const loopback_queue =
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QUEUE_DIRECT(64, uint8_t,
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loopback_usart.producer,
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loopback_usart.consumer);
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static struct usart_rx_dma const loopback_rx_dma =
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USART_RX_DMA(STM32_DMAC_CH6, 32);
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static struct usart_tx_dma const loopback_tx_dma =
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USART_TX_DMA(STM32_DMAC_CH7, 16);
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static struct usart_config const loopback_usart =
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USART_CONFIG(usart2_hw,
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loopback_rx_dma.usart_rx,
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loopback_tx_dma.usart_tx,
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115200,
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0,
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loopback_queue,
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loopback_queue);
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/******************************************************************************
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* Initialize board.
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*/
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static void board_init(void)
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{
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gpio_enable_interrupt(GPIO_USER_BUTTON);
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usart_init(&loopback_usart);
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}
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DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
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