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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017-09-23 Urey first implementation
*/
#include <rtthread.h>
#ifdef RT_USING_CONSOLE
#include <rthw.h>
#include <rtdevice.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include "board.h"
#include "soc.h"
#include "dw_usart.h"
#include "drv_usart.h"
#include "pin_name.h"
#include "pinmux.h"
#if CONFIG_USART
struct
{
uint32_t base;
uint32_t irq;
} const sg_usart_config[CONFIG_USART_NUM] =
{
{ CSKY_UART0_BASE, UART0_IRQn },
{ CSKY_UART1_BASE, UART1_IRQn },
{ CSKY_UART2_BASE, UART2_IRQn },
{ CSKY_UART3_BASE, UART3_IRQn }
};
typedef struct
{
pin_t tx;
pin_t rx;
uint16_t cfg_idx; //idx of sg_usart_config[]
uint16_t function;
} usart_pin_map_t;
const static usart_pin_map_t s_usart_pin_map[] =
{
{
PA0_TXD0_PWM0_XX_SIROUT0,
PA1_RXD0_PWM1_XX_SIRIN0,
0,
0
},
{
PA10_TXD1_PWM1_XX_SIROUT1,
PA11_RXD1_PWM2_XX_SIRIN1,
1,
0
},
{
PA23_TXD2_PWM5_XX_SIROUT2,
PA22_RXD2_PWM4_XX_SIRIN2,
2,
0
},
{
PA26_TXD3_PWMFAULT_XX_SIROUT3,
PA27_RXD3_PWM0_XX_SIRIN3,
3,
0
}
};
int32_t target_usart_init(pin_t tx, pin_t rx, uint32_t *base, uint32_t *irq)
{
uint32_t idx;
for (idx = 0; idx < sizeof(s_usart_pin_map) / sizeof(usart_pin_map_t); idx++)
{
if (s_usart_pin_map[idx].tx == tx && s_usart_pin_map[idx].rx == rx)
{
*base = sg_usart_config[s_usart_pin_map[idx].cfg_idx].base;
*irq = sg_usart_config[s_usart_pin_map[idx].cfg_idx].irq;
/*pinmux*/
pin_mux(s_usart_pin_map[idx].tx, s_usart_pin_map[idx].function);
pin_mux(s_usart_pin_map[idx].rx, s_usart_pin_map[idx].function);
return s_usart_pin_map[idx].cfg_idx;
}
}
return -1;
}
#endif
#ifdef RT_USING_UART1
#define UART_TXD1 PA10_TXD1_PWM1_XX_SIROUT1
#define UART_RXD1 PA11_RXD1_PWM2_XX_SIRIN1
static usart_handle_t uart1_handle;
static struct rt_serial_device serial1;
/*
static void usart1_event_cb(uint32_t event, void *cb_arg)
{
switch (event)
{
case USART_EVENT_SEND_COMPLETE:
rt_hw_serial_isr(&serial1,RT_SERIAL_EVENT_TX_DONE);
break;
case USART_EVENT_RECEIVED:
rt_hw_serial_isr(&serial1,RT_SERIAL_EVENT_RX_IND);
break;
default:
break;
}
}
*/
__attribute__((isr)) void USART1_IRQHandler(void)
{
rt_hw_serial_isr(&serial1,RT_SERIAL_EVENT_RX_IND);
}
#endif
/*
* UART interface
*/
static rt_err_t uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
int ret;
usart_handle_t uart;
uint32_t bauds;
usart_mode_e mode;
usart_parity_e parity;
usart_stop_bits_e stopbits;
usart_data_bits_e databits;
RT_ASSERT(serial != RT_NULL);
uart = (usart_handle_t)serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
/* set baudrate parity...*/
bauds = cfg->baud_rate;
mode = USART_MODE_ASYNCHRONOUS;
if (cfg->parity == PARITY_EVEN)
parity = USART_PARITY_EVEN;
else if (cfg->parity == PARITY_ODD)
parity = USART_PARITY_ODD;
else
parity = USART_PARITY_NONE;
stopbits = USART_STOP_BITS_1 ;
databits = USART_DATA_BITS_8;
ret = csi_usart_config(uart, SYSTEM_CLOCK, bauds, USART_MODE_ASYNCHRONOUS, parity, stopbits, databits);
if (ret < 0)
{
return -RT_ERROR;
}
return RT_EOK;
}
static rt_err_t uart_control(struct rt_serial_device *serial, int cmd, void *arg)
{
usart_handle_t uart;
RT_ASSERT(serial != RT_NULL);
uart = (usart_handle_t)serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* Disable the UART Interrupt */
dw_usart_clr_int_flag(uart,IER_RDA_INT_ENABLE);
break;
case RT_DEVICE_CTRL_SET_INT:
/* Enable the UART Interrupt */
dw_usart_set_int_flag(uart,IER_RDA_INT_ENABLE);
break;
}
return (RT_EOK);
}
static int uart_putc(struct rt_serial_device *serial, char c)
{
usart_handle_t uart;
RT_ASSERT(serial != RT_NULL);
uart = (usart_handle_t)serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
dw_usart_putchar(uart,c);
return (1);
}
static int uart_getc(struct rt_serial_device *serial)
{
uint8_t ch;
usart_handle_t uart;
RT_ASSERT(serial != RT_NULL);
uart = (usart_handle_t)serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
if (!dw_usart_getchar_no_poll(uart, &ch))
{
return (int)(ch);
}
else
{
return -1;
}
}
const struct rt_uart_ops _uart_ops =
{
uart_configure,
uart_control,
uart_putc,
uart_getc,
};
int rt_hw_usart_init(void)
{
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
#ifdef RT_USING_UART1
serial1.ops = & _uart_ops;
serial1.config = config;
serial1.config.bufsz = 2048;
serial1.config.baud_rate = 115200;
uart1_handle = csi_usart_initialize(UART_TXD1, UART_RXD1, NULL/*usart1_event_cb*/,
(void *) 0);
rt_hw_serial_register(&serial1,
"uart1",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart1_handle);
#endif
return 0;
}
INIT_BOARD_EXPORT(rt_hw_usart_init);
#endif
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