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rt-thread-official/bsp/hpmicro/libraries/drivers/drv_uart.c

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/*
* Copyright (c) 2021 HPMicro
*
* SPDX-License-Identifier: BSD-3-Clause
*
* Change Logs:
* Date Author Notes
* 2021-09-19 HPMICRO First version
*
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <rtdbg.h>
#include "board.h"
#include "drv_uart.h"
#include "hpm_uart_drv.h"
#include "hpm_sysctl_drv.h"
#ifdef RT_USING_SERIAL
#define UART_ROOT_CLK_FREQ BOARD_APP_UART_SRC_FREQ
struct hpm_uart {
UART_Type *uart_base;
uint32_t irq_num;
struct rt_serial_device *serial;
char *device_name;
};
extern void init_uart_pins(UART_Type *ptr);
static void hpm_uart_isr(struct rt_serial_device *serial);
static rt_err_t hpm_uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg);
static rt_err_t hpm_uart_control(struct rt_serial_device *serial, int cmd, void *arg);
static int hpm_uart_putc(struct rt_serial_device *serial, char ch);
static int hpm_uart_getc(struct rt_serial_device *serial);
#if defined(BSP_USING_UART0)
struct rt_serial_device serial0;
void uart0_isr(void)
{
hpm_uart_isr(&serial0);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART0,uart0_isr)
#endif
#if defined(BSP_USING_UART1)
struct rt_serial_device serial1;
void uart1_isr(void)
{
hpm_uart_isr(&serial1);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART1,uart1_isr)
#endif
#if defined(BSP_USING_UART2)
struct rt_serial_device serial2;
void uart2_isr(void)
{
hpm_uart_isr(&serial2);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART2,uart2_isr)
#endif
#if defined(BSP_USING_UART3)
struct rt_serial_device serial3;
void uart3_isr(void)
{
hpm_uart_isr(&serial3);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART3,uart3_isr)
#endif
#if defined(BSP_USING_UART4)
struct rt_serial_device serial4;
void uart4_isr(void)
{
hpm_uart_isr(&serial4);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART4,uart4_isr)
#endif
#if defined(BSP_USING_UART5)
struct rt_serial_device serial5;
void uart5_isr(void)
{
hpm_uart_isr(&serial5);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART5,uart5_isr)
#endif
#if defined(BSP_USING_UART6)
struct rt_serial_device serial6;
void uart6_isr(void)
{
hpm_uart_isr(&serial6);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART6,uart6_isr)
#endif
#if defined(BSP_USING_UART7)
struct rt_serial_device serial7;
void uart7_isr(void)
{
hpm_uart_isr(&serial7);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART7,uart7_isr)
#endif
#if defined(BSP_USING_UART8)
struct rt_serial_device serial8;
void uart8_isr(void)
{
hpm_uart_isr(&serial8);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART8,uart8_isr)
#endif
#if defined(BSP_USING_UART9)
struct rt_serial_device serial9;
void uart9_isr(void)
{
hpm_uart_isr(&serial9);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART9,uart9_isr)
#endif
#if defined(BSP_USING_UART10)
struct rt_serial_device serial10;
void uart10_isr(void)
{
hpm_uart_isr(&serial10);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART10,uart10_isr)
#endif
#if defined(BSP_USING_UART11)
struct rt_serial_device serial11;
void uart11_isr(void)
{
hpm_uart_isr(&serial11);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART11,uart11_isr)
#endif
#if defined(BSP_USING_UART12)
struct rt_serial_device serial12;
void uart12_isr(void)
{
hpm_uart_isr(&serial12);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART12,uart12_isr)
#endif
#if defined(BSP_USING_UART13)
struct rt_serial_device serial13;
void uart13_isr(void)
{
hpm_uart_isr(&serial13);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART13,uart13_isr)
#endif
#if defined(BSP_USING_UART14)
struct rt_serial_device serial14;
void uart14_isr(void)
{
hpm_uart_isr(&serial14);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART14,uart14_isr)
#endif
#if defined(BSP_USING_UART15)
struct rt_serial_device serial15;
void uart15_isr(void)
{
hpm_uart_isr(&serial15);
}
SDK_DECLARE_EXT_ISR_M(IRQn_UART15,uart15_isr)
#endif
static const struct hpm_uart uarts[] = {
#if defined(BSP_USING_UART0)
{
HPM_UART0,
IRQn_UART0,
&serial0,
"uart0",
},
#endif
#if defined(BSP_USING_UART1)
{
HPM_UART1,
IRQn_UART1,
&serial1,
"uart1",
},
#endif
#if defined(BSP_USING_UART2)
{
HPM_UART2,
IRQn_UART2,
&serial2,
"uart2",
},
#endif
#if defined(BSP_USING_UART3)
{
HPM_UART3,
IRQn_UART3,
&serial3,
"uart3",
},
#endif
#if defined(BSP_USING_UART4)
{
HPM_UART4,
IRQn_UART4,
&serial4,
"uart4",
},
#endif
#if defined(BSP_USING_UART5)
{
HPM_UART5,
IRQn_UART5,
&serial5,
"uart5",
},
#endif
#if defined(BSP_USING_UART6)
{
HPM_UART6,
IRQn_UART6,
&serial6,
"uart6",
},
#endif
#if defined(BSP_USING_UART7)
{
HPM_UART7,
IRQn_UART7,
&serial7,
"uart7",
},
#endif
#if defined(BSP_USING_UART8)
{
HPM_UART8,
IRQn_UART8,
&serial8,
"uart8",
},
#endif
#if defined(BSP_USING_UART9)
{
HPM_UART9,
IRQn_UART9,
&serial9,
"uart9",
},
#endif
#if defined(BSP_USING_UART10)
{
HPM_UART10,
IRQn_UART10,
&serial10,
"uart10",
},
#endif
#if defined(BSP_USING_UART11)
{
HPM_UART11,
IRQn_UART11,
&serial11,
"uart11",
},
#endif
#if defined(BSP_USING_UART12)
{
HPM_UART12,
IRQn_UART12,
&serial12,
"uart12",
},
#endif
#if defined(BSP_USING_UART13)
{
HPM_UART13,
IRQn_UART13,
&serial13,
"uart13",
},
#endif
#if defined(BSP_USING_UART14)
{
HPM_UART14,
IRQn_UART14,
&serial14,
"uart14",
},
#endif
#if defined(BSP_USING_UART15)
{
HPM_UART15,
IRQn_UART15,
&serial15,
"uart15",
},
#endif
};
/**
* @brief UART common interrupt process. This
*
* @param serial Serial device
*/
static void hpm_uart_isr(struct rt_serial_device *serial)
{
struct hpm_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct hpm_uart *)serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
/* UART in mode Receiver */
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
}
static rt_err_t hpm_uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uart_config_t uart_config;
struct hpm_uart *uart = (struct hpm_uart *)serial->parent.user_data;
init_uart_pins(uart->uart_base);
uart_default_config(uart->uart_base, &uart_config);
uart_config.src_freq_in_hz = board_init_uart_clock(uart->uart_base);
uart_config.baudrate = cfg->baud_rate;
uart_config.num_of_stop_bits = cfg->stop_bits;
uart_config.parity = cfg->parity;
uart_config.word_length = cfg->data_bits - DATA_BITS_5;
board_init_uart(uart->uart_base);
uart_init(uart->uart_base, &uart_config);
hpm_uart_control(serial, RT_DEVICE_CTRL_SET_INT, NULL);
}
static rt_err_t hpm_uart_control(struct rt_serial_device *serial, int cmd, void *arg)
{
RT_ASSERT(serial != RT_NULL);
struct hpm_uart *uart = (struct hpm_uart *)serial->parent.user_data;
switch (cmd) {
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
uart_disable_irq(uart->uart_base, uart_intr_rx_data_avail_or_timeout);
intc_m_disable_irq(uart->irq_num);
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
uart_enable_irq(uart->uart_base, uart_intr_rx_data_avail_or_timeout);
intc_m_enable_irq_with_priority(uart->irq_num, 1);
break;
}
return RT_EOK;
}
static int hpm_uart_putc(struct rt_serial_device *serial, char ch)
{
struct hpm_uart *uart = (struct hpm_uart *)serial->parent.user_data;
uart_write_byte(uart->uart_base, ch);
while(!uart_check_status(uart->uart_base, uart_stat_transmitter_empty)) {
}
}
static int hpm_uart_getc(struct rt_serial_device *serial)
{
int result = -1;
struct hpm_uart *uart = (struct hpm_uart *)serial->parent.user_data;
if (uart_check_status(uart->uart_base, uart_stat_data_ready)) {
uart_receive_byte(uart->uart_base, (uint8_t*)&result);
}
return result;
}
static const struct rt_uart_ops hpm_uart_ops = {
hpm_uart_configure,
hpm_uart_control,
hpm_uart_putc,
hpm_uart_getc,
};
int rt_hw_uart_init(void)
{
/* Added bypass logic here since the rt_hw_uart_init function will be initialized twice, the 2nd initialization should be bypassed */
static bool initialized;
rt_err_t err = RT_EOK;
if (initialized)
{
return err;
}
else
{
initialized = true;
}
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
for (uint32_t i = 0; i < sizeof(uarts) / sizeof(uarts[0]); i++) {
uarts[i].serial->ops = &hpm_uart_ops;
uarts[i].serial->config = config;
/* register UART deivce */
err = rt_hw_serial_register(uarts[i].serial,
uarts[i].device_name,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
(void*)&uarts[i]);
}
return err;
}
INIT_BOARD_EXPORT(rt_hw_uart_init);
#endif /* RT_USING_SERIAL */
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