usart.c ファイル

STM32L152 シリアル(USARTドライバ) [詳解]

#include "device.h"
#include "interrupt.h"
#include "fifo.h"
#include "tkprintf.h"
#include "device/uart_ioctl.h"
#include "task/event.h"
#include "task/syscall.h"
#include "stm32l1xx_hal.h"

usart.c の依存先関係図:

[ソースコード]

マクロ定義
#define	MAXBUFSIZE   256
#define	USART_TC_TIMEOUT   100000
#define	USART_TE_TIMEOUT   1000

型定義
typedef struct st_usart_data	st_usart_data

関数
static void	init_rcc_usart2 (void)
static void	init_rcc_usart4 (void)
static void	init_gpio_usart2 (void)
static void	init_gpio_usart4 (void)
static void	init_usart (st_usart_data *usart_dt, USART_TypeDef *usart, int irq)
void	inthdr_usart (unsigned int intnum, void *sp)
static int	usart_init (struct st_device *dev, char *param)
static int	usart_getc (struct st_device *dev, unsigned char *rd)
static int	usart_putc (struct st_device *dev, unsigned char td)
static int	usart_ioctl (struct st_device *dev, unsigned int com, unsigned int arg, void *param)
static int	usart_select (struct st_device *dev, unsigned int timeout)
static int	usart_init_low (struct st_device *dev, char *param)
static int	usart_getc_low (struct st_device *dev, unsigned char *rd)
static int	usart_putc_low (struct st_device *dev, unsigned char td)

変数
const struct st_device	usart2_device
const struct st_device	usart4_device
static st_usart_data	usart_data [3]
static const char	usart_rx_eventqueue_name [2][10]
static const char	usart_tx_eventqueue_name [2][10]
static UART_HandleTypeDef	huart_low
const struct st_device	usart2_low_device

詳解

STM32L152 シリアル(USARTドライバ)

日付

2018.08.12

著者

Takashi SHUDO

USART2_TX PA2 USART2_RX PA3

USART4_TX PC10 USART4_RX PC11

usart.c に定義があります。

変数詳解

usart2_device

const struct st_device usart2_device

初期値:

= {
        .name   = DEF_DEV_NAME_UART,
        .explan = "STM32L1 USART2",
        .private_data = (void *)&usart_data[0],
        .register_dev = usart_init,
        .getc = usart_getc,
        .putc = usart_putc,
        .ioctl = usart_ioctl,
        .select = usart_select
}

usart.c の 76 行目に定義があります。

usart2_low_device

const struct st_device usart2_low_device

初期値:

= {
        .name   = DEF_DEV_NAME_DEBUG,
        .explan = "Debug/Error Console",
        .private_data = (void *)&usart_data[2],
        .register_dev = usart_init_low,
        .getc = usart_getc_low,
        .putc = usart_putc_low
}

usart.c の 365 行目に定義があります。

usart4_device

const struct st_device usart4_device

初期値:

= {
        .name   = DEF_DEV_NAME_UART "1",
        .explan = "STM32L1 USART4",
        .private_data = (void *)&usart_data[1],
        .register_dev = usart_init,
        .getc = usart_getc,
        .putc = usart_putc,
        .ioctl = usart_ioctl,
        .select = usart_select
}

usart.c の 77 行目に定義があります。

usart_rx_eventqueue_name

const char usart_rx_eventqueue_name[2][10]

static

初期値:

= {
        "usart2_rx", "usart4_rx"
}

usart.c の 158 行目に定義があります。

usart_tx_eventqueue_name

const char usart_tx_eventqueue_name[2][10]

static

初期値:

= {
        "usart2_tx", "usart4_tx"
}

usart.c の 162 行目に定義があります。