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rt-thread/bsp/mb9bf506r/drivers/fm3_uart.c

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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2012-05-15 lgnq first version.
* 2012-05-28 heyuanjie87 change interfaces
*/
#include <rtthread.h>
#include <rtdevice.h>
#include "fm3_uart.h"
#if (defined(RT_USING_UART0_0) || defined(RT_USING_UART0_1))
/* UART0 device driver structure */
struct uart03_device uart0 =
{
FM3_MFS0_UART,
MFS0RX_IRQn,
MFS0TX_IRQn,
};
struct rt_serial_device serial0;
void MFS0RX_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_serial_isr(&serial0, RT_SERIAL_EVENT_RX_IND);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#if (defined(RT_USING_UART1_0) || defined(RT_USING_UART1_1))
/* UART1 device driver structure */
struct uart03_device uart1 =
{
FM3_MFS1_UART,
MFS1RX_IRQn,
MFS1TX_IRQn,
};
struct rt_serial_device serial1;
void MFS1RX_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_serial_isr(&serial1, RT_SERIAL_EVENT_RX_IND);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#if (defined(RT_USING_UART2_0) || defined(RT_USING_UART2_1) || defined(RT_USING_UART2_2))
/* UART2 device driver structure */
struct uart03_device uart2 =
{
FM3_MFS2_UART,
MFS2RX_IRQn,
MFS2TX_IRQn,
};
struct rt_serial_device serial2;
void MFS2RX_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_serial_isr(&serial2, RT_SERIAL_EVENT_RX_IND);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#if (defined(RT_USING_UART3_0) || defined(RT_USING_UART3_1) || defined(RT_USING_UART3_2))
/* UART3 device driver structure */
struct uart03_device uart3 =
{
FM3_MFS3_UART,
MFS3RX_IRQn,
MFS3TX_IRQn,
};
struct rt_serial_device serial3;
void MFS3RX_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_serial_isr(&serial3, RT_SERIAL_EVENT_RX_IND);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#if (defined(RT_USING_UART4_0) || defined(RT_USING_UART4_1) || defined(RT_USING_UART4_2))
/* UART4 device driver structure */
struct uart47_device uart4 =
{
FM3_MFS4_UART,
MFS4RX_IRQn,
MFS4TX_IRQn,
FIFO_SIZE,
};
struct rt_serial_device serial4;
void MFS4RX_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_serial_isr(&serial4, RT_SERIAL_EVENT_RX_IND);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#if (defined(RT_USING_UART5_0) || defined(RT_USING_UART5_1) || defined(RT_USING_UART5_2))
/* UART5 device driver structure */
struct uart47_device uart5 =
{
FM3_MFS5_UART,
MFS5RX_IRQn,
MFS5TX_IRQn,
FIFO_SIZE,
};
struct rt_serial_device serial5;
void MFS5RX_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_serial_isr(&serial5, RT_SERIAL_EVENT_RX_IND);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#if (defined(RT_USING_UART6_0) || defined(RT_USING_UART6_1))
/* UART6 device driver structure */
struct uart47_device uart6 =
{
FM3_MFS6_UART,
MFS6RX_IRQn,
MFS6TX_IRQn,
FIFO_SIZE,
};
struct rt_serial_device serial6;
void MFS6RX_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_serial_isr(&serial6, RT_SERIAL_EVENT_RX_IND);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#if (defined(RT_USING_UART7_0) || defined(RT_USING_UART7_1))
/* UART7 device driver structure */
struct uart47_device uart7 =
{
FM3_MFS7_UART,
MFS7RX_IRQn,
MFS7TX_IRQn,
FIFO_SIZE,
};
struct rt_serial_device serial7;
void MFS7RX_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_serial_isr(&serial7, RT_SERIAL_EVENT_RX_IND);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
void uart_pin_setup(void)
{
#if defined(RT_USING_UART0_0)
/* Set UART Ch0 Port, SIN0_0(P21), SOT0_0(P22) */
FM3_GPIO->PFR2_f.P1 = 1;
FM3_GPIO->PFR2_f.P2 = 1;
FM3_GPIO->EPFR07_f.SIN0S0 = 1;
FM3_GPIO->EPFR07_f.SIN0S1 = 0;
FM3_GPIO->EPFR07_f.SOT0B0 = 1;
FM3_GPIO->EPFR07_f.SOT0B1 = 0;
#elif defined(RT_USING_UART0_1)
/* Set UART Ch0 Port, SIN0_1(P14), SOT0_1(P15) */
FM3_GPIO->PFR1_f.P4 = 1;
FM3_GPIO->PFR1_f.P5 = 1;
FM3_GPIO->EPFR07_f.SIN0S0 = 0;
FM3_GPIO->EPFR07_f.SIN0S1 = 1;
FM3_GPIO->EPFR07_f.SOT0B0 = 0;
FM3_GPIO->EPFR07_f.SOT0B1 = 1;
#endif
#if defined(RT_USING_UART1_0)
/* Set UART Ch1 Port, SIN1_0(P56), SOT1_0(P57) */
FM3_GPIO->PFR5_f.P6 = 1;
FM3_GPIO->PFR5_f.P7 = 1;
FM3_GPIO->EPFR07_f.SIN1S0 = 1;
FM3_GPIO->EPFR07_f.SIN1S1 = 0;
FM3_GPIO->EPFR07_f.SOT1B0 = 1;
FM3_GPIO->EPFR07_f.SOT1B1 = 0;
#elif defined(RT_USING_UART1_1)
/* Set UART Ch1 Port, SIN1_1(P11), SOT1_1(P12) */
FM3_GPIO->PFR1_f.P1 = 1;
FM3_GPIO->PFR1_f.P2 = 1;
FM3_GPIO->EPFR07_f.SIN1S0 = 0;
FM3_GPIO->EPFR07_f.SIN1S1 = 1;
FM3_GPIO->EPFR07_f.SOT1B0 = 0;
FM3_GPIO->EPFR07_f.SOT1B1 = 1;
#endif
#if defined(RT_USING_UART2_0)
/* Set UART Ch2 Port, SIN2_0(P72), SOT2_0(P73) */
FM3_GPIO->PFR7_f.P2 = 1;
FM3_GPIO->PFR7_f.P3 = 1;
FM3_GPIO->EPFR07_f.SIN2S0 = 1;
FM3_GPIO->EPFR07_f.SIN2S1 = 0;
FM3_GPIO->EPFR07_f.SOT2B0 = 1;
FM3_GPIO->EPFR07_f.SOT2B1 = 0;
#elif defined(RT_USING_UART2_1)
/* Set UART Ch2 Port, SIN2_1(P24), SOT2_1(P25) */
FM3_GPIO->PFR2_f.P4 = 1;
FM3_GPIO->PFR2_f.P5 = 1;
FM3_GPIO->EPFR07_f.SIN2S0 = 0;
FM3_GPIO->EPFR07_f.SIN2S1 = 1;
FM3_GPIO->EPFR07_f.SOT2B0 = 0;
FM3_GPIO->EPFR07_f.SOT2B1 = 1;
#elif defined(RT_USING_UART2_2)
/* Set UART Ch2 Port, SIN2_2(P17), SOT2_2(P18) */
FM3_GPIO->PFR1_f.P7 = 1;
FM3_GPIO->PFR1_f.P8 = 1;
FM3_GPIO->EPFR07_f.SIN2S0 = 1;
FM3_GPIO->EPFR07_f.SIN2S1 = 1;
FM3_GPIO->EPFR07_f.SOT2B0 = 1;
FM3_GPIO->EPFR07_f.SOT2B1 = 1;
#endif
#if defined(RT_USING_UART3_0)
/* Set UART Ch3 Port, SIN3_0(P66), SOT3_0(P67) */
FM3_GPIO->PFR6_f.P6 = 1;
FM3_GPIO->PFR6_f.P7 = 1;
FM3_GPIO->EPFR07_f.SIN3S0 = 1;
FM3_GPIO->EPFR07_f.SIN3S1 = 0;
FM3_GPIO->EPFR07_f.SOT3B0 = 1;
FM3_GPIO->EPFR07_f.SOT3B1 = 0;
#elif defined(RT_USING_UART3_1)
/* Set UART Ch3 Port, SIN3_1(P50), SOT3_1(P51) */
FM3_GPIO->PFR5_f.P0 = 1;
FM3_GPIO->PFR5_f.P1 = 1;
FM3_GPIO->EPFR07_f.SIN3S0 = 0;
FM3_GPIO->EPFR07_f.SIN3S1 = 1;
FM3_GPIO->EPFR07_f.SOT3B0 = 0;
FM3_GPIO->EPFR07_f.SOT3B1 = 1;
#elif defined(RT_USING_UART3_2)
/* Set UART Ch3 Port, SIN3_2(P48), SOT3_2(P49) */
FM3_GPIO->PFR4_f.P8 = 1;
FM3_GPIO->PFR4_f.P9 = 1;
FM3_GPIO->EPFR07_f.SIN3S0 = 1;
FM3_GPIO->EPFR07_f.SIN3S1 = 1;
FM3_GPIO->EPFR07_f.SOT3B0 = 1;
FM3_GPIO->EPFR07_f.SOT3B1 = 1;
#endif
#if defined(RT_USING_UART4_0)
/* Set UART Ch4 Port, SIN4_0(P0A), SOT4_0(P0B), CTS4_0(P0E), RTS4_0(P0D) */
FM3_GPIO->PFR0_f.PA = 1;
FM3_GPIO->PFR0_f.PB = 1;
FM3_GPIO->PFR0_f.PD = 1;
FM3_GPIO->PFR0_f.PE = 1;
FM3_GPIO->EPFR08_f.SIN4S0 = 1;
FM3_GPIO->EPFR08_f.SIN4S1 = 0;
FM3_GPIO->EPFR08_f.SOT4B0 = 1;
FM3_GPIO->EPFR08_f.SOT4B1 = 0;
FM3_GPIO->EPFR08_f.CTS4S0 = 1;
FM3_GPIO->EPFR08_f.CTS4S1 = 0;
FM3_GPIO->EPFR08_f.RTS4E0 = 1;
FM3_GPIO->EPFR08_f.RTS4E1 = 0;
#elif defined(RT_USING_UART4_1)
/* Set UART Ch4 Port, SIN4_1(P1A), SOT4_1(P1B), CTS4_1(P1D), RTS4_1(P1E) */
FM3_GPIO->PFR1_f.PA = 1;
FM3_GPIO->PFR1_f.PB = 1;
FM3_GPIO->PFR1_f.PD = 1;
FM3_GPIO->PFR1_f.PE = 1;
FM3_GPIO->EPFR08_f.SIN4S0 = 0;
FM3_GPIO->EPFR08_f.SIN4S1 = 1;
FM3_GPIO->EPFR08_f.SOT4B0 = 0;
FM3_GPIO->EPFR08_f.SOT4B1 = 1;
FM3_GPIO->EPFR08_f.CTS4S0 = 0;
FM3_GPIO->EPFR08_f.CTS4S1 = 1;
FM3_GPIO->EPFR08_f.RTS4E0 = 0;
FM3_GPIO->EPFR08_f.RTS4E1 = 1;
#elif defined(RT_USING_UART4_2)
/* Set UART Ch4 Port, SIN4_2(P05), SOT4_2(P06), CTS4_2(P08), RTS4_2(P09)*/
FM3_GPIO->PFR0_f.P5 = 1;
FM3_GPIO->PFR0_f.P6 = 1;
FM3_GPIO->PFR0_f.P8 = 1;
FM3_GPIO->PFR0_f.P9 = 1;
FM3_GPIO->EPFR08_f.SIN4S0 = 1;
FM3_GPIO->EPFR08_f.SIN4S1 = 1;
FM3_GPIO->EPFR08_f.SOT4B0 = 1;
FM3_GPIO->EPFR08_f.SOT4B1 = 1;
FM3_GPIO->EPFR08_f.CTS4S0 = 1;
FM3_GPIO->EPFR08_f.CTS4S1 = 1;
FM3_GPIO->EPFR08_f.RTS4E0 = 1;
FM3_GPIO->EPFR08_f.RTS4E1 = 1;
#endif
#if defined(RT_USING_UART5_0)
/* Set UART Ch5 Port, SIN5_0(P60), SOT5_0(P61) */
FM3_GPIO->PFR6_f.P0 = 1;
FM3_GPIO->PFR6_f.P1 = 1;
FM3_GPIO->EPFR08_f.SIN5S0 = 1;
FM3_GPIO->EPFR08_f.SIN5S1 = 0;
FM3_GPIO->EPFR08_f.SOT5B0 = 1;
FM3_GPIO->EPFR08_f.SOT5B1 = 0;
#elif defined(RT_USING_UART5_1)
/* Set UART Ch5 Port, SIN5_1(P63), SOT5_1(P64) */
FM3_GPIO->PFR6_f.P3 = 1;
FM3_GPIO->PFR6_f.P4 = 1;
FM3_GPIO->EPFR08_f.SIN5S0 = 0;
FM3_GPIO->EPFR08_f.SIN5S1 = 1;
FM3_GPIO->EPFR08_f.SOT5B0 = 0;
FM3_GPIO->EPFR08_f.SOT5B1 = 1;
#elif defined(RT_USING_UART5_2)
/* Set UART Ch5 Port, SIN5_2(P36), SOT5_2(P37) */
FM3_GPIO->PFR3_f.P6 = 1;
FM3_GPIO->PFR3_f.P7 = 1;
FM3_GPIO->EPFR08_f.SIN5S0 = 1;
FM3_GPIO->EPFR08_f.SIN5S1 = 1;
FM3_GPIO->EPFR08_f.SOT5B0 = 1;
FM3_GPIO->EPFR08_f.SOT5B1 = 1;
#endif
#if defined(RT_USING_UART6_0)
/* Set UART Ch6 Port, SIN6_0(P53), SOT6_0(P54) */
FM3_GPIO->PFR5_f.P3 = 1;
FM3_GPIO->PFR5_f.P4 = 1;
FM3_GPIO->EPFR08_f.SIN6S0 = 1;
FM3_GPIO->EPFR08_f.SIN6S1 = 0;
FM3_GPIO->EPFR08_f.SOT6B0 = 1;
FM3_GPIO->EPFR08_f.SOT6B1 = 0;
#elif defined(RT_USING_UART6_1)
/* Set UART Ch6 Port, SIN6_1(P33), SOT6_1(P32) */
FM3_GPIO->PFR3_f.P2 = 1;
FM3_GPIO->PFR3_f.P3 = 1;
FM3_GPIO->EPFR08_f.SIN6S0 = 0;
FM3_GPIO->EPFR08_f.SIN6S1 = 1;
FM3_GPIO->EPFR08_f.SOT6B0 = 0;
FM3_GPIO->EPFR08_f.SOT6B1 = 1;
#endif
#if defined(RT_USING_UART7_0)
/* Set UART Ch7 Port, SIN7_0(P59), SOT7_0(P5A) */
FM3_GPIO->PFR5_f.P9 = 1;
FM3_GPIO->PFR5_f.PA = 1;
FM3_GPIO->EPFR08_f.SIN7S0 = 1;
FM3_GPIO->EPFR08_f.SIN7S1 = 0;
FM3_GPIO->EPFR08_f.SOT7B0 = 1;
FM3_GPIO->EPFR08_f.SOT7B1 = 0;
#elif defined(RT_USING_UART7_1)
/* Set UART Ch7 Port, SIN7_1(P4E), SOT7_1(P4D) */
FM3_GPIO->PFR4_f.PD = 1;
FM3_GPIO->PFR4_f.PE = 1;
FM3_GPIO->EPFR08_f.SIN7S0 = 0;
FM3_GPIO->EPFR08_f.SIN7S1 = 1;
FM3_GPIO->EPFR08_f.SOT7B0 = 0;
FM3_GPIO->EPFR08_f.SOT7B1 = 1;
#endif
}
static rt_err_t uart03_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
struct uart03_device *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct uart03_device *)serial->parent.user_data;
uart->uart_regs->SMR = SMR_MD_UART | SMR_SOE;
/* set baudreate */
uart->uart_regs->BGR = (40000000UL + (cfg->baud_rate/2))/cfg->baud_rate - 1;
/* set stop bits */
switch (cfg->stop_bits)
{
case STOP_BITS_1:
uart->uart_regs->SMR_f.SBL = 0;
uart->uart_regs->ESCR_f.ESBL = 0;
break;
case STOP_BITS_2:
uart->uart_regs->SMR_f.SBL = 1;
uart->uart_regs->ESCR_f.ESBL = 0;
break;
case STOP_BITS_3:
uart->uart_regs->SMR_f.SBL = 0;
uart->uart_regs->ESCR_f.ESBL = 1;
break;
case STOP_BITS_4:
uart->uart_regs->SMR_f.SBL = 1;
uart->uart_regs->ESCR_f.ESBL = 1;
break;
default:
return RT_ERROR;
}
/* set data bits */
switch (cfg->data_bits)
{
case DATA_BITS_5:
uart->uart_regs->ESCR_f.L0 = 1;
uart->uart_regs->ESCR_f.L1 = 0;
uart->uart_regs->ESCR_f.L2 = 0;
break;
case DATA_BITS_6:
uart->uart_regs->ESCR_f.L0 = 0;
uart->uart_regs->ESCR_f.L1 = 1;
uart->uart_regs->ESCR_f.L2 = 0;
break;
case DATA_BITS_7:
uart->uart_regs->ESCR_f.L0 = 1;
uart->uart_regs->ESCR_f.L1 = 1;
uart->uart_regs->ESCR_f.L2 = 0;
break;
case DATA_BITS_8:
uart->uart_regs->ESCR_f.L0 = 0;
uart->uart_regs->ESCR_f.L1 = 0;
uart->uart_regs->ESCR_f.L2 = 0;
break;
case DATA_BITS_9:
uart->uart_regs->ESCR_f.L0 = 0;
uart->uart_regs->ESCR_f.L1 = 0;
uart->uart_regs->ESCR_f.L2 = 1;
break;
default:
return RT_ERROR;
}
/* set parity */
switch (cfg->parity)
{
case PARITY_NONE:
uart->uart_regs->ESCR_f.PEN = 0;
break;
case PARITY_EVEN:
uart->uart_regs->ESCR_f.PEN = 1;
uart->uart_regs->ESCR_f.P = 0;
break;
case PARITY_ODD:
uart->uart_regs->ESCR_f.PEN = 1;
uart->uart_regs->ESCR_f.P = 1;
break;
default:
return RT_ERROR;
}
/* set bit order */
switch (cfg->bit_order)
{
case BIT_ORDER_LSB:
uart->uart_regs->SMR_f.BDS = 0;
break;
case BIT_ORDER_MSB:
uart->uart_regs->SMR_f.BDS = 1;
break;
default:
return RT_ERROR;
}
/* set NRZ mode */
switch (cfg->invert)
{
case NRZ_NORMAL:
uart->uart_regs->ESCR_f.INV = 0;
break;
case NRZ_INVERTED:
uart->uart_regs->ESCR_f.INV = 1;
break;
default:
return RT_ERROR;
}
uart->uart_regs->SCR = SCR_RXE | SCR_TXE | SCR_RIE;
return RT_EOK;
}
static rt_err_t uart03_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct uart03_device *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct uart03_device *)serial->parent.user_data;
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
UART_DISABLE_IRQ(uart->rx_irq);
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
UART_ENABLE_IRQ(uart->rx_irq);
break;
}
return (RT_EOK);
}
static int uart03_putc(struct rt_serial_device *serial, char c)
{
struct uart03_device *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct uart03_device *)serial->parent.user_data;
/* while send buffer is empty */
while (!(uart->uart_regs->SSR & SSR_TDRE));
/* write to send buffer */
uart->uart_regs->TDR = c;
return (1);
}
static int uart03_getc(struct rt_serial_device *serial)
{
struct uart03_device *uart;
int ch;
RT_ASSERT(serial != RT_NULL);
uart = (struct uart03_device *)serial->parent.user_data;
/* receive buffer is full */
if (uart->uart_regs->SSR & SSR_RDRF)
{
ch = uart->uart_regs->RDR & 0xff;
return (ch);
}
else
return (-1);
}
static struct rt_uart_ops uart03_ops =
{
uart03_configure,
uart03_control,
uart03_putc,
uart03_getc,
};
static rt_err_t uart47_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
struct uart47_device *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct uart47_device *)serial->parent.user_data;
uart->uart_regs->SMR = SMR_MD_UART | SMR_SOE;
/* set baudreate */
uart->uart_regs->BGR = (40000000UL + (cfg->baud_rate/2))/cfg->baud_rate - 1;
/* set stop bits */
switch (cfg->stop_bits)
{
case STOP_BITS_1:
uart->uart_regs->SMR_f.SBL = 0;
uart->uart_regs->ESCR_f.ESBL = 0;
break;
case STOP_BITS_2:
uart->uart_regs->SMR_f.SBL = 1;
uart->uart_regs->ESCR_f.ESBL = 0;
break;
case STOP_BITS_3:
uart->uart_regs->SMR_f.SBL = 0;
uart->uart_regs->ESCR_f.ESBL = 1;
break;
case STOP_BITS_4:
uart->uart_regs->SMR_f.SBL = 1;
uart->uart_regs->ESCR_f.ESBL = 1;
break;
default:
return RT_ERROR;
}
/* set data bits */
switch (cfg->data_bits)
{
case DATA_BITS_5:
uart->uart_regs->ESCR_f.L0 = 1;
uart->uart_regs->ESCR_f.L1 = 0;
uart->uart_regs->ESCR_f.L2 = 0;
break;
case DATA_BITS_6:
uart->uart_regs->ESCR_f.L0 = 0;
uart->uart_regs->ESCR_f.L1 = 1;
uart->uart_regs->ESCR_f.L2 = 0;
break;
case DATA_BITS_7:
uart->uart_regs->ESCR_f.L0 = 1;
uart->uart_regs->ESCR_f.L1 = 1;
uart->uart_regs->ESCR_f.L2 = 0;
break;
case DATA_BITS_8:
uart->uart_regs->ESCR_f.L0 = 0;
uart->uart_regs->ESCR_f.L1 = 0;
uart->uart_regs->ESCR_f.L2 = 0;
break;
case DATA_BITS_9:
uart->uart_regs->ESCR_f.L0 = 0;
uart->uart_regs->ESCR_f.L1 = 0;
uart->uart_regs->ESCR_f.L2 = 1;
break;
default:
return RT_ERROR;
}
/* set parity */
switch (cfg->parity)
{
case PARITY_NONE:
uart->uart_regs->ESCR_f.PEN = 0;
break;
case PARITY_EVEN:
uart->uart_regs->ESCR_f.PEN = 1;
uart->uart_regs->ESCR_f.P = 0;
break;
case PARITY_ODD:
uart->uart_regs->ESCR_f.PEN = 1;
uart->uart_regs->ESCR_f.P = 1;
break;
default:
return RT_ERROR;
}
/* set bit order */
switch (cfg->bit_order)
{
case BIT_ORDER_LSB:
uart->uart_regs->SMR_f.BDS = 0;
break;
case BIT_ORDER_MSB:
uart->uart_regs->SMR_f.BDS = 1;
break;
default:
return RT_ERROR;
}
/* set NRZ mode */
switch (cfg->invert)
{
case NRZ_NORMAL:
uart->uart_regs->ESCR_f.INV = 0;
break;
case NRZ_INVERTED:
uart->uart_regs->ESCR_f.INV = 1;
break;
default:
return RT_ERROR;
}
/* configure fifo */
/* Disable the Data Lost detection */
uart->uart_regs->FCR1_f.FLSTE = 0;
/* Enable the received FIFO idle detection */
uart->uart_regs->FCR1_f.FRIE = 1;
/* Requests for the transmit FIFO data */
uart->uart_regs->FCR1_f.FDRQ = 1;
/* Disable the transmit FIFO interrupt */
uart->uart_regs->FCR1_f.FTIE = 0;
/* Transmit FIFO:FIFO1; Received FIFO:FIFO2 */
uart->uart_regs->FCR1_f.FSEL = 0;
/* Transfer data count */
uart->uart_regs->FBYTE1 = 0;
/* Set the data count to generate a received interrupt */
uart->uart_regs->FBYTE2 = uart->fifo_size;
/* FIFO pointer Not reloaded */
uart->uart_regs->FCR0_f.FLD = 0;
/* FIFO pointer Not saved */
uart->uart_regs->FCR0_f.FSET = 0;
/* FIFO2 is reset */
uart->uart_regs->FCR0_f.FCL2 = 1;
/* FIFO1 is reset */
uart->uart_regs->FCR0_f.FCL1 = 1;
/* Enables the FIFO2 operation */
uart->uart_regs->FCR0_f.FE2 = 1;
/* Enables the FIFO1 operation */
uart->uart_regs->FCR0_f.FE1 = 1;
/* enable receive and send */
uart->uart_regs->SCR = SCR_RXE | SCR_TXE | SCR_RIE;
return RT_EOK;
}
static rt_err_t uart47_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct uart47_device *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct uart47_device *)serial->parent.user_data;
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
UART_DISABLE_IRQ(uart->rx_irq);
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
UART_ENABLE_IRQ(uart->rx_irq);
break;
}
return (RT_EOK);
}
static int uart47_putc(struct rt_serial_device *serial, char c)
{
struct uart47_device *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct uart47_device *)serial->parent.user_data;
/* while send fifo is empty */
while (!(uart->uart_regs->SSR & SSR_TDRE));
/* write to fifo */
uart->uart_regs->TDR = c;
return (1);
}
static int uart47_getc(struct rt_serial_device *serial)
{
int ch;
struct uart47_device *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct uart47_device *)serial->parent.user_data;
/* receive is disabled */
if (!(uart->uart_regs->SCR & SCR_RXE))
return (-1);
/* receive fifo is not full */
if ((uart->uart_regs->SSR & SSR_RDRF) == 0)
return (-1);
/* read char */
ch = uart->uart_regs->RDR & 0xff;
return (ch);
}
static struct rt_uart_ops uart47_ops =
{
uart47_configure,
uart47_control,
uart47_putc,
uart47_getc,
};
void rt_hw_serial_init(void)
{
struct serial_configure config;
uart_pin_setup();
#if (defined(RT_USING_UART0_0) || defined(RT_USING_UART0_1))
config.baud_rate = BAUD_RATE_115200;
config.bit_order = BIT_ORDER_LSB;
config.data_bits = DATA_BITS_8;
config.parity = PARITY_NONE;
config.stop_bits = STOP_BITS_1;
config.invert = NRZ_NORMAL;
config.bufsz = RT_SERIAL_RB_BUFSZ;
serial0.ops = &uart03_ops;
serial0.config = config;
/* register UART0 device */
rt_hw_serial_register(&serial0, "uart0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
&uart0);
#endif
#if (defined(RT_USING_UART1_0) || defined(RT_USING_UART1_1))
config.baud_rate = BAUD_RATE_115200;
config.bit_order = BIT_ORDER_LSB;
config.data_bits = DATA_BITS_8;
config.parity = PARITY_NONE;
config.stop_bits = STOP_BITS_1;
config.invert = NRZ_NORMAL;
config.bufsz = RT_SERIAL_RB_BUFSZ;
serial1.ops = &uart03_ops;
serial1.config = config;
/* register UART1 device */
rt_hw_serial_register(&serial1,
"uart1",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
&uart1);
#endif
#if (defined(RT_USING_UART2_0) || defined(RT_USING_UART2_1) || defined(RT_USING_UART2_2))
config.baud_rate = BAUD_RATE_115200;
config.bit_order = BIT_ORDER_LSB;
config.data_bits = DATA_BITS_8;
config.parity = PARITY_NONE;
config.stop_bits = STOP_BITS_1;
config.invert = NRZ_NORMAL;
config.bufsz = RT_SERIAL_RB_BUFSZ;
serial2.ops = &uart03_ops;
serial2.config = config;
/* register UART2 device */
rt_hw_serial_register(&serial2,
"uart2",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
&uart2);
#endif
#if (defined(RT_USING_UART3_0) || defined(RT_USING_UART3_1) || defined(RT_USING_UART3_2))
config.baud_rate = BAUD_RATE_115200;
config.bit_order = BIT_ORDER_LSB;
config.data_bits = DATA_BITS_8;
config.parity = PARITY_NONE;
config.stop_bits = STOP_BITS_1;
config.invert = NRZ_NORMAL;
config.bufsz = RT_SERIAL_RB_BUFSZ;
serial3.ops = &uart03_ops;
serial3.config = config;
/* register UART3 device */
rt_hw_serial_register(&serial3,
"uart3",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
&uart3);
#endif
#if (defined(RT_USING_UART4_0) || defined(RT_USING_UART4_1) || defined(RT_USING_UART4_2))
config.baud_rate = BAUD_RATE_115200;
config.bit_order = BIT_ORDER_LSB;
config.data_bits = DATA_BITS_8;
config.parity = PARITY_NONE;
config.stop_bits = STOP_BITS_1;
config.invert = NRZ_NORMAL;
config.bufsz = RT_SERIAL_RB_BUFSZ;
serial4.ops = &uart47_ops;
serial4.config = config;
/* register UART4 device */
rt_hw_serial_register(&serial4,
"uart4",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
&uart4);
#endif
#if (defined(RT_USING_UART5_0) || defined(RT_USING_UART5_1) || defined(RT_USING_UART5_2))
config.baud_rate = BAUD_RATE_115200;
config.bit_order = BIT_ORDER_LSB;
config.data_bits = DATA_BITS_8;
config.parity = PARITY_NONE;
config.stop_bits = STOP_BITS_1;
config.invert = NRZ_NORMAL;
config.bufsz = RT_SERIAL_RB_BUFSZ;
serial5.ops = &uart47_ops;
serial5.config = config;
/* register UART5 device */
rt_hw_serial_register(&serial5,
"uart5",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
&uart5);
#endif
#if (defined(RT_USING_UART6_0) || defined(RT_USING_UART6_1))
config.baud_rate = BAUD_RATE_115200;
config.bit_order = BIT_ORDER_LSB;
config.data_bits = DATA_BITS_8;
config.parity = PARITY_NONE;
config.stop_bits = STOP_BITS_1;
config.invert = NRZ_NORMAL;
config.bufsz = RT_SERIAL_RB_BUFSZ;
serial6.ops = &uart47_ops;
serial6.config = config;
/* register UART6 device */
rt_hw_serial_register(&serial6,
"uart6",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
&uart6);
#endif
#if (defined(RT_USING_UART7_0) || defined(RT_USING_UART7_1))
config.baud_rate = BAUD_RATE_115200;
config.bit_order = BIT_ORDER_LSB;
config.data_bits = DATA_BITS_8;
config.parity = PARITY_NONE;
config.stop_bits = STOP_BITS_1;
config.invert = NRZ_NORMAL;
config.bufsz = RT_SERIAL_RB_BUFSZ;
serial7.ops = &uart47_ops;
serial7.config = config;
/* register UART7 device */
rt_hw_serial_register(&serial7,
"uart7",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
&uart7);
#endif
}
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