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/* Copyright (c) 2014 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.
*/
/* STM32F072-discovery board configuration */
#include "common.h"
#include "ec_version.h"
#include "gpio.h"
#include "hooks.h"
#include "registers.h"
#include "spi.h"
#include "task.h"
#include "usb_gpio.h"
#include "usb_spi.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 = 0;
gpio_set_level(GPIO_LED_U, (count & 0x03) == 0);
gpio_set_level(GPIO_LED_R, (count & 0x03) == 1);
gpio_set_level(GPIO_LED_D, (count & 0x03) == 2);
gpio_set_level(GPIO_LED_L, (count & 0x03) == 3);
count++;
}
static enum gpio_signal const usb_gpio_list[] = {
GPIO_USER_BUTTON,
GPIO_LED_U,
GPIO_LED_D,
GPIO_LED_L,
GPIO_LED_R,
};
USB_GPIO_CONFIG(usb_gpio,
usb_gpio_list,
USB_IFACE_GPIO,
USB_EP_GPIO)
const void *const usb_strings[] = {
[USB_STR_DESC] = usb_string_desc,
[USB_STR_VENDOR] = USB_STRING_DESC("Google Inc."),
[USB_STR_PRODUCT] = USB_STRING_DESC("discovery-stm32f072"),
[USB_STR_VERSION] = USB_STRING_DESC(CROS_EC_VERSION32),
[USB_STR_STREAM_NAME] = USB_STRING_DESC("Echo"),
[USB_STR_CONSOLE_NAME] = USB_STRING_DESC("Shell"),
};
BUILD_ASSERT(ARRAY_SIZE(usb_strings) == USB_STR_COUNT);
void usb_spi_board_enable(struct usb_spi_config const *config)
{
/* Remap SPI2 to DMA channels 6 and 7 */
STM32_SYSCFG_CFGR1 |= (1 << 24);
/* Configure SPI GPIOs */
gpio_config_module(MODULE_SPI_MASTER, 1);
/* Set all four SPI pins to high speed */
STM32_GPIO_OSPEEDR(GPIO_B) |= 0xff000000;
/* Enable clocks to SPI2 module */
STM32_RCC_APB1ENR |= STM32_RCC_PB1_SPI2;
/* Reset SPI2 */
STM32_RCC_APB1RSTR |= STM32_RCC_PB1_SPI2;
STM32_RCC_APB1RSTR &= ~STM32_RCC_PB1_SPI2;
spi_enable(1);
}
void usb_spi_board_disable(struct usb_spi_config const *config)
{
spi_enable(0);
/* Disable clocks to SPI2 module */
STM32_RCC_APB1ENR &= ~STM32_RCC_PB1_SPI2;
/* Release SPI GPIOs */
gpio_config_module(MODULE_SPI_MASTER, 0);
}
USB_SPI_CONFIG(usb_spi, USB_IFACE_SPI, USB_EP_SPI);
/* Initialize board. */
static void board_init(void)
{
gpio_enable_interrupt(GPIO_USER_BUTTON);
usb_spi_enable(&usb_spi, 1);
}
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
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