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/*
* Copyright (c) 2006-2025, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-04-28 xckhmf Modify for <nrfx>
* 2020-10-31 xckhmf Support for UART1
*
*/
#include <rtdevice.h>
#include <nrfx_uarte.h>
#include "drv_uart.h"
#ifdef BSP_USING_UART
#if defined(BSP_USING_UART0) || defined(BSP_USING_UART1)|| defined(BSP_USING_UART2)|| defined(BSP_USING_UART3)
typedef struct
{
struct rt_serial_device *serial;
nrfx_uarte_t uarte_instance;
uint8_t rx_length;
uint8_t tx_buffer[1];
uint8_t rx_buffer[1];
bool isInit;
uint32_t rx_pin;
uint32_t tx_pin;
} drv_uart_cb_t;
#ifdef BSP_USING_UART0
static struct rt_serial_device m_serial_0;
drv_uart_cb_t m_uarte0_cb = {
.uarte_instance = NRFX_UARTE_INSTANCE(0),
.rx_length = 0,
.rx_pin = BSP_UART0_RX_PIN,
.tx_pin = BSP_UART0_TX_PIN,
.isInit = false
};
#endif /* BSP_USING_UART0 */
#ifdef BSP_USING_UART1
static struct rt_serial_device m_serial_1;
drv_uart_cb_t m_uarte1_cb = {
.uarte_instance = NRFX_UARTE_INSTANCE(1),
.rx_length = 0,
.rx_pin = BSP_UART1_RX_PIN,
.tx_pin = BSP_UART1_TX_PIN,
.isInit = false
};
#endif /* BSP_USING_UART1 */
#ifdef BSP_USING_UART2
static struct rt_serial_device m_serial_2;
drv_uart_cb_t m_uarte2_cb = {
.uarte_instance = NRFX_UARTE_INSTANCE(2),
.rx_length = 0,
.rx_pin = BSP_UART2_RX_PIN,
.tx_pin = BSP_UART2_TX_PIN,
.isInit = false
};
#endif /* BSP_USING_UART2 */
#ifdef BSP_USING_UART3
static struct rt_serial_device m_serial_3;
drv_uart_cb_t m_uarte3_cb = {
.uarte_instance = NRFX_UARTE_INSTANCE(3),
.rx_length = 0,
.rx_pin = BSP_UART3_RX_PIN,
.tx_pin = BSP_UART3_TX_PIN,
.isInit = false
};
#endif /* BSP_USING_UART3 */
static void uarte_evt_handler(nrfx_uarte_event_t const * p_event,
void * p_context)
{
drv_uart_cb_t *p_cb = RT_NULL;
p_cb = (drv_uart_cb_t*)p_context;
switch (p_event->type)
{
case NRFX_UARTE_EVT_RX_DONE:
p_cb->rx_length = p_event->data.rxtx.bytes;
if(p_cb->serial->parent.open_flag&RT_DEVICE_FLAG_INT_RX)
{
rt_hw_serial_isr(p_cb->serial, RT_SERIAL_EVENT_RX_IND);
}
(void)nrfx_uarte_rx(&(p_cb->uarte_instance), p_cb->rx_buffer, 1);
break;
case NRFX_UARTE_EVT_ERROR:
(void)nrfx_uarte_rx(&(p_cb->uarte_instance), p_cb->rx_buffer, 1);
break;
case NRFX_UARTE_EVT_TX_DONE:
if(p_cb->serial->parent.open_flag&RT_DEVICE_FLAG_INT_TX)
{
rt_hw_serial_isr(p_cb->serial, RT_SERIAL_EVENT_TX_DONE);
}
break;
default:
break;
}
}
static rt_err_t _uart_cfg(struct rt_serial_device *serial, struct serial_configure *cfg)
{
nrfx_uarte_config_t config = NRFX_UARTE_DEFAULT_CONFIG(NRF_UARTE_PSEL_DISCONNECTED,\
NRF_UARTE_PSEL_DISCONNECTED);
drv_uart_cb_t *p_cb = RT_NULL;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
if (serial->parent.user_data == RT_NULL)
{
return -RT_ERROR;
}
p_cb = (drv_uart_cb_t*)serial->parent.user_data;
if(p_cb->isInit)
{
nrfx_uarte_uninit(&(p_cb->uarte_instance));
p_cb->isInit = false;
}
switch (cfg->baud_rate)
{
case BAUD_RATE_2400:
config.baudrate = NRF_UARTE_BAUDRATE_2400;
break;
case BAUD_RATE_4800:
config.baudrate = NRF_UARTE_BAUDRATE_4800;
break;
case BAUD_RATE_9600:
config.baudrate = NRF_UARTE_BAUDRATE_9600;
break;
case BAUD_RATE_19200:
config.baudrate = NRF_UARTE_BAUDRATE_19200;
break;
case BAUD_RATE_38400:
config.baudrate = NRF_UARTE_BAUDRATE_38400;
break;
case BAUD_RATE_57600:
config.baudrate = NRF_UARTE_BAUDRATE_57600;
break;
case BAUD_RATE_115200:
config.baudrate = NRF_UARTE_BAUDRATE_115200;
break;
case BAUD_RATE_230400:
config.baudrate = NRF_UARTE_BAUDRATE_230400;
break;
case BAUD_RATE_460800:
config.baudrate = NRF_UARTE_BAUDRATE_460800;
break;
case BAUD_RATE_921600:
config.baudrate = NRF_UARTE_BAUDRATE_921600;
break;
#if defined(SOC_NRF5340)
case 1000000:
config.baudrate = NRF_UARTE_BAUDRATE_1000000;
break;
#endif /* SOC_NRF5340*/
case BAUD_RATE_2000000:
case BAUD_RATE_3000000:
return -RT_EINVAL;
default:
config.baudrate = NRF_UARTE_BAUDRATE_115200;
break;
}
config.hal_cfg.parity = (cfg->parity == PARITY_NONE)?\
NRF_UARTE_PARITY_EXCLUDED:NRF_UARTE_PARITY_INCLUDED;
config.hal_cfg.hwfc = NRF_UARTE_HWFC_DISABLED;
config.pselrxd = p_cb->rx_pin;
config.pseltxd = p_cb->tx_pin;
config.p_context = (void *)p_cb;
nrfx_uarte_init(&(p_cb->uarte_instance),(nrfx_uarte_config_t const *)&config,uarte_evt_handler);
nrfx_uarte_rx(&(p_cb->uarte_instance),p_cb->rx_buffer,1);
p_cb->isInit = true;
return RT_EOK;
}
static rt_err_t _uart_ctrl(struct rt_serial_device *serial, int cmd, void *arg)
{
drv_uart_cb_t *p_cb = RT_NULL;
RT_ASSERT(serial != RT_NULL);
if (serial->parent.user_data == RT_NULL)
{
return -RT_ERROR;
}
p_cb = (drv_uart_cb_t*)serial->parent.user_data;
switch (cmd)
{
/* disable interrupt */
case RT_DEVICE_CTRL_CLR_INT:
break;
/* enable interrupt */
case RT_DEVICE_CTRL_SET_INT:
break;
case RT_DEVICE_CTRL_CUSTOM:
if ((rt_uint32_t)(arg) == UART_CONFIG_BAUD_RATE_9600)
{
p_cb->serial->config.baud_rate = 9600;
}
else if ((rt_uint32_t)(arg) == UART_CONFIG_BAUD_RATE_115200)
{
p_cb->serial->config.baud_rate = 115200;
}
_uart_cfg(serial, &(serial->config));
break;
case RT_DEVICE_CTRL_PIN:
_uart_cfg(serial, &(serial->config));
break;
case RT_DEVICE_POWERSAVE:
if(p_cb->isInit)
{
nrfx_uarte_uninit(&(p_cb->uarte_instance));
p_cb->isInit = false;
}
break;
case RT_DEVICE_WAKEUP:
_uart_cfg(serial, &(serial->config));
break;
default:
return -RT_ERROR;
}
return RT_EOK;
}
static int _uart_putc(struct rt_serial_device *serial, char c)
{
drv_uart_cb_t *p_cb = RT_NULL;
int rtn = -1;
RT_ASSERT(serial != RT_NULL);
if (serial->parent.user_data != RT_NULL)
{
p_cb = (drv_uart_cb_t*)serial->parent.user_data;
}
p_cb->tx_buffer[0] = c;
nrfx_uarte_tx(&(p_cb->uarte_instance),p_cb->tx_buffer,1);
if(!(serial->parent.open_flag&RT_DEVICE_FLAG_INT_TX))
{
while(nrfx_uarte_tx_in_progress(&(p_cb->uarte_instance)))
{
}
}
#if defined(SOC_NRF5340)
return 1;
#endif /* SOC_NRF5340*/
return rtn;
}
static int _uart_getc(struct rt_serial_device *serial)
{
int ch = -1;
drv_uart_cb_t *p_cb = RT_NULL;
RT_ASSERT(serial != RT_NULL);
if (serial->parent.user_data != RT_NULL)
{
p_cb = (drv_uart_cb_t*)serial->parent.user_data;
}
if(p_cb->rx_length)
{
ch = p_cb->rx_buffer[0];
p_cb->rx_length--;
}
return ch;
}
static struct rt_uart_ops _uart_ops = {
_uart_cfg,
_uart_ctrl,
_uart_putc,
_uart_getc
};
int rt_hw_uart_init(void)
{
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
#ifdef BSP_USING_UART0
m_serial_0.config = config;
#if defined(SOC_NRF5340)
m_serial_0.config.baud_rate = 1000000;
#endif /* SOC_NRF5340*/
m_serial_0.ops = &_uart_ops;
m_uarte0_cb.serial = &m_serial_0;
rt_hw_serial_register(&m_serial_0, "uart0", \
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_DMA_RX | RT_DEVICE_FLAG_DMA_TX , &m_uarte0_cb);
#endif /* BSP_USING_UART0 */
#ifdef BSP_USING_UART1
m_serial_1.config = config;
#if defined(SOC_NRF5340)
m_serial_1.config.baud_rate = 1000000;
#endif /* SOC_NRF5340*/
m_serial_1.ops = &_uart_ops;
m_uarte1_cb.serial = &m_serial_1;
rt_hw_serial_register(&m_serial_1, "uart1", \
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |RT_DEVICE_FLAG_INT_TX | RT_DEVICE_FLAG_DMA_RX | RT_DEVICE_FLAG_DMA_TX, &m_uarte1_cb);
#endif /* BSP_USING_UART1 */
#ifdef BSP_USING_UART2
m_serial_2.config = config;
m_serial_2.ops = &_uart_ops;
m_uarte2_cb.serial = &m_serial_2;
rt_hw_serial_register(&m_serial_2, "uart2", \
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |RT_DEVICE_FLAG_INT_TX | RT_DEVICE_FLAG_DMA_RX | RT_DEVICE_FLAG_DMA_TX, &m_uarte2_cb);
#endif /* BSP_USING_UART2 */
#ifdef BSP_USING_UART3
m_serial_3.config = config;
m_serial_3.ops = &_uart_ops;
m_uarte3_cb.serial = &m_serial_3;
rt_hw_serial_register(&m_serial_3, "uart3", \
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |RT_DEVICE_FLAG_INT_TX | RT_DEVICE_FLAG_DMA_RX | RT_DEVICE_FLAG_DMA_TX, &m_uarte3_cb);
#endif /* BSP_USING_UART3 */
return RT_EOK;
}
#endif /* defined(BSP_USING_UART0) || defined(BSP_USING_UART1) */
#endif /* BSP_USING_UART */
|
