72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/* Copyright 2013 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 configuration */
|
|
|
|
#include "common.h"
|
|
#include "gpio.h"
|
|
#include "hooks.h"
|
|
#include "queue_policies.h"
|
|
#include "registers.h"
|
|
#include "task.h"
|
|
#include "usart-stm32f0.h"
|
|
#include "usart_rx_dma.h"
|
|
#include "usart_tx_dma.h"
|
|
#include "util.h"
|
|
|
|
void button_event(enum gpio_signal signal);
|
|
|
|
#include "gpio_list.h"
|
|
|
|
void button_event(enum gpio_signal signal)
|
|
{
|
|
static int count;
|
|
|
|
gpio_set_level(GPIO_LED_GREEN, ++count & 0x02);
|
|
}
|
|
|
|
void usb_gpio_tick(void)
|
|
{
|
|
static int count;
|
|
|
|
gpio_set_level(GPIO_LED_BLUE, ++count & 0x01);
|
|
}
|
|
DECLARE_HOOK(HOOK_TICK, usb_gpio_tick, HOOK_PRIO_DEFAULT);
|
|
|
|
/******************************************************************************
|
|
* Setup USART2 as a loopback device, it just echo's back anything sent to it.
|
|
*/
|
|
static struct usart_config const loopback_usart;
|
|
|
|
static struct queue const loopback_queue =
|
|
QUEUE_DIRECT(64, uint8_t,
|
|
loopback_usart.producer,
|
|
loopback_usart.consumer);
|
|
|
|
static struct usart_rx_dma const loopback_rx_dma =
|
|
USART_RX_DMA(STM32_DMAC_CH6, 32);
|
|
|
|
static struct usart_tx_dma const loopback_tx_dma =
|
|
USART_TX_DMA(STM32_DMAC_CH7, 16);
|
|
|
|
static struct usart_config const loopback_usart =
|
|
USART_CONFIG(usart2_hw,
|
|
loopback_rx_dma.usart_rx,
|
|
loopback_tx_dma.usart_tx,
|
|
115200,
|
|
0,
|
|
loopback_queue,
|
|
loopback_queue);
|
|
|
|
/******************************************************************************
|
|
* Initialize board.
|
|
*/
|
|
static void board_init(void)
|
|
{
|
|
gpio_enable_interrupt(GPIO_USER_BUTTON);
|
|
|
|
usart_init(&loopback_usart);
|
|
}
|
|
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
|