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#include "board.h"
#include "uart.h"
#include "nrf_drv_common.h"
#include "nrf_drv_uart.h"
#include "app_util_platform.h"
#include "nrf_gpio.h"
#include <rtdevice.h>
static struct rt_serial_device _serial0_0;
#if USE_UART0_1
static struct rt_serial_device _serial0_1;
#endif
typedef struct
{
struct rt_serial_device *serial;
nrf_drv_uart_t uart;
uint32_t rx_pin;
uint32_t tx_pin;
} UART_CFG_T;
UART_CFG_T uart0 = {
.uart = NRF_DRV_UART_INSTANCE(0),
#ifdef RT_USING_CONSOLE
.rx_pin = 3,
.tx_pin = 4
#else
.rx_pin = 19,
.tx_pin = 20
#endif
};
#if USE_UART0_1
UART_CFG_T uart1 = {
.uart = NRF_DRV_UART_INSTANCE(0),
.rx_pin = 3,
.tx_pin = 4
};
#endif
UART_CFG_T *working_cfg = RT_NULL;
void UART0_IRQHandler(void)
{
if (nrf_uart_int_enable_check(NRF_UART0, NRF_UART_INT_MASK_ERROR)
&& nrf_uart_event_check(NRF_UART0, NRF_UART_EVENT_ERROR))
{
nrf_uart_event_clear(NRF_UART0, NRF_UART_EVENT_ERROR);
}
if (nrf_uart_int_enable_check(NRF_UART0, NRF_UART_INT_MASK_RXDRDY)
&& nrf_uart_event_check(NRF_UART0, NRF_UART_EVENT_RXDRDY))
{
rt_hw_serial_isr(working_cfg->serial, RT_SERIAL_EVENT_RX_IND);
}
if (nrf_uart_int_enable_check(NRF_UART0, NRF_UART_INT_MASK_TXDRDY)
&& nrf_uart_event_check(NRF_UART0, NRF_UART_EVENT_TXDRDY))
{
rt_hw_serial_isr(working_cfg->serial, RT_SERIAL_EVENT_TX_DONE);
}
if (nrf_uart_event_check(NRF_UART0, NRF_UART_EVENT_RXTO))
{
rt_hw_serial_isr(working_cfg->serial, RT_SERIAL_EVENT_RX_TIMEOUT);
}
}
static rt_err_t _uart_cfg(struct rt_serial_device *serial, struct serial_configure *cfg)
{
nrf_drv_uart_config_t config = NRF_DRV_UART_DEFAULT_CONFIG;
UART_CFG_T *instance = &uart0;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
if (serial->parent.user_data != RT_NULL)
{
instance = (UART_CFG_T*)serial->parent.user_data;
}
nrf_uart_disable(instance->uart.reg.p_uart);
switch (cfg->baud_rate)
{
case 115200:
config.baudrate = NRF_UART_BAUDRATE_115200;
break;
case 9600:
config.baudrate = NRF_UART_BAUDRATE_9600;
break;
default:
config.baudrate = NRF_UART_BAUDRATE_115200;
break;
}
if (cfg->parity == PARITY_NONE)
{
config.parity = NRF_UART_PARITY_EXCLUDED;
}
else
{
config.parity = NRF_UART_PARITY_INCLUDED;
}
config.hwfc = NRF_UART_HWFC_DISABLED;
config.interrupt_priority = APP_IRQ_PRIORITY_LOWEST;
config.pselcts = 0;
config.pselrts = 0;
config.pselrxd = instance->rx_pin;
config.pseltxd = instance->tx_pin;
nrf_gpio_pin_set(config.pseltxd);
nrf_gpio_cfg_output(config.pseltxd);
nrf_gpio_pin_clear(config.pseltxd);
nrf_gpio_cfg_input(config.pselrxd, NRF_GPIO_PIN_NOPULL);
nrf_uart_baudrate_set(instance->uart.reg.p_uart, config.baudrate);
nrf_uart_configure(instance->uart.reg.p_uart, config.parity, config.hwfc);
nrf_uart_txrx_pins_set(instance->uart.reg.p_uart, config.pseltxd, config.pselrxd);
if (config.hwfc == NRF_UART_HWFC_ENABLED)
{
nrf_uart_hwfc_pins_set(instance->uart.reg.p_uart, config.pselrts, config.pselcts);
}
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_TXDRDY);
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_RXDRDY);
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_RXTO);
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_ERROR);
nrf_uart_int_enable(instance->uart.reg.p_uart, NRF_UART_INT_MASK_RXDRDY | NRF_UART_INT_MASK_RXTO | NRF_UART_INT_MASK_ERROR);
nrf_drv_common_irq_enable(nrf_drv_get_IRQn((void *)instance->uart.reg.p_uart), config.interrupt_priority);
nrf_uart_enable(instance->uart.reg.p_uart);
// nrf_uart_task_trigger(instance->uart.reg.p_uart, NRF_UART_TASK_STARTRX);
working_cfg = instance;
return RT_EOK;
}
static rt_err_t _uart_ctrl(struct rt_serial_device *serial, int cmd, void *arg)
{
UART_CFG_T *instance = working_cfg;
RT_ASSERT(serial != RT_NULL);
if (serial->parent.user_data != RT_NULL)
{
instance = (UART_CFG_T*)serial->parent.user_data;
}
switch (cmd)
{
/* disable interrupt */
case RT_DEVICE_CTRL_CLR_INT:
nrf_uart_task_trigger(instance->uart.reg.p_uart, NRF_UART_TASK_STOPRX);
nrf_uart_int_disable(instance->uart.reg.p_uart, NRF_UART_INT_MASK_RXDRDY
| NRF_UART_INT_MASK_RXTO
| NRF_UART_INT_MASK_ERROR);
nrf_drv_common_irq_disable(nrf_drv_get_IRQn((void *)instance->uart.reg.p_uart));
break;
/* enable interrupt */
case RT_DEVICE_CTRL_SET_INT:
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_RXDRDY);
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_RXTO);
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_ERROR);
/* Enable RX interrupt. */
nrf_uart_int_enable(instance->uart.reg.p_uart, NRF_UART_INT_MASK_RXDRDY
| NRF_UART_INT_MASK_RXTO
| NRF_UART_INT_MASK_ERROR);
nrf_drv_common_irq_enable(nrf_drv_get_IRQn((void *)instance->uart.reg.p_uart), APP_IRQ_PRIORITY_LOWEST);
nrf_uart_task_trigger(instance->uart.reg.p_uart, NRF_UART_TASK_STARTRX);
break;
case RT_DEVICE_CTRL_CUSTOM:
if ((rt_uint32_t)(arg) == UART_CONFIG_BAUD_RATE_9600)
{
instance->serial->config.baud_rate = 9600;
nrf_uart_baudrate_set(instance->uart.reg.p_uart, NRF_UART_BAUDRATE_9600);
}
else if ((rt_uint32_t)(arg) == UART_CONFIG_BAUD_RATE_115200)
{
instance->serial->config.baud_rate = 115200;
nrf_uart_baudrate_set(instance->uart.reg.p_uart, NRF_UART_BAUDRATE_115200);
}
// _uart_cfg(instance->serial, &(instance->serial->config));
// nrf_uart_task_trigger(instance->uart.reg.p_uart, NRF_UART_TASK_STARTRX);
break;
case RT_DEVICE_CTRL_PIN:
if (working_cfg != instance)
{
_uart_cfg(instance->serial, &(instance->serial->config));
}
break;
case RT_DEVICE_POWERSAVE:
nrf_uart_disable(instance->uart.reg.p_uart);
nrf_uart_txrx_pins_disconnect(instance->uart.reg.p_uart);
nrf_gpio_pin_clear(instance->rx_pin);
nrf_gpio_cfg_output(instance->rx_pin);
nrf_gpio_pin_clear(instance->tx_pin);
nrf_gpio_cfg_output(instance->tx_pin);
break;
case RT_DEVICE_WAKEUP:
_uart_cfg(instance->serial, &(instance->serial->config));
break;
default:
return RT_ERROR;
}
return RT_EOK;
}
static int _uart_putc(struct rt_serial_device *serial, char c)
{
UART_CFG_T *instance = working_cfg;
RT_ASSERT(serial != RT_NULL);
if (serial->parent.user_data != RT_NULL)
{
instance = (UART_CFG_T*)serial->parent.user_data;
}
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_TXDRDY);
nrf_uart_task_trigger(instance->uart.reg.p_uart, NRF_UART_TASK_STARTTX);
nrf_uart_txd_set(instance->uart.reg.p_uart, (uint8_t)c);
while (!nrf_uart_event_check(instance->uart.reg.p_uart, NRF_UART_EVENT_TXDRDY))
{
}
return 1;
}
static int _uart_getc(struct rt_serial_device *serial)
{
int ch = -1;
UART_CFG_T *instance = working_cfg;
RT_ASSERT(serial != RT_NULL);
if (serial->parent.user_data != RT_NULL)
{
instance = (UART_CFG_T*)serial->parent.user_data;
}
if (nrf_uart_event_check(instance->uart.reg.p_uart, NRF_UART_EVENT_RXDRDY))
{
nrf_uart_event_clear(instance->uart.reg.p_uart, NRF_UART_EVENT_RXDRDY);
ch = (int)(nrf_uart_rxd_get(instance->uart.reg.p_uart));
}
return ch;
}
static struct rt_uart_ops _uart_ops = {
_uart_cfg,
_uart_ctrl,
_uart_putc,
_uart_getc
};
void rt_hw_uart_init(void)
{
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
config.bufsz = RT_SERIAL_RB_BUFSZ;
_serial0_0.config = config;
_serial0_0.ops = &_uart_ops;
uart0.serial = &_serial0_0;
rt_hw_serial_register(&_serial0_0, "uart0", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX, &uart0);
#if USE_UART0_1
config.bufsz = UART0_RB_SIZE;
_serial0_1.config = config;
_serial0_1.ops = &_uart_ops;
uart1.serial = &_serial0_1;
rt_hw_serial_register(&_serial0_1, "uart1", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX, &uart1);
#endif
}
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