fw_uart.c File Reference

#include "fw_uart.h"
#include "fw_tim.h"
#include "fw_sys.h"

Go to the source code of this file.

Functions
int16_t	UART_Timer_InitValueCalculate (uint32_t sysclk, HAL_State_t _1TMode, uint32_t baudrate)
void	_UART1_ConfigDynUart (UART1_BaudSource_t baudSource, HAL_State_t _1TMode, int16_t init)
void	UART1_Config8bitUart (UART1_BaudSource_t baudSource, HAL_State_t _1TMode, uint32_t baudrate)
void	UART1_Config9bitUart (UART1_BaudSource_t baudSource, HAL_State_t _1TMode, uint32_t baudrate)
void	UART1_TxChar (char dat)
void	UART1_TxHex (uint8_t hex)
void	UART1_TxString (uint8_t *str)
int	putchar (int dat)
void	UART2_Config (HAL_State_t _1TMode, uint32_t baudrate)
void	UART2_TxChar (char dat)
void	UART2_TxHex (uint8_t hex)
void	UART2_TxString (uint8_t *str)
void	UART3_ConfigOnTimer2 (HAL_State_t _1TMode, uint32_t baudrate)
void	UART3_ConfigOnTimer3 (HAL_State_t _1TMode, uint32_t baudrate)
void	UART4_ConfigOnTimer2 (HAL_State_t _1TMode, uint32_t baudrate)
void	UART4_ConfigOnTimer4 (HAL_State_t _1TMode, uint32_t baudrate)

Function Documentation

_UART1_ConfigDynUart()

void _UART1_ConfigDynUart	(	UART1_BaudSource_t	baudSource,
		HAL_State_t	_1TMode,
		int16_t	init
	)

Definition at line 36 of file fw_uart.c.

{
    UART1_SetBaudSource(baudSource);
    // Timer1 configuration. Mode0 only, mode2 is covered by mode0 so it is unnecessary.
    if (baudSource == UART1_BaudSource_Timer1)
    {
        TIM_Timer1_Set1TMode(_1TMode);
        TIM_Timer1_SetMode(TIM_TimerMode_16BitAuto);
        TIM_Timer1_SetInitValue(init >> 8, init & 0xFF);
        TIM_Timer1_SetRunState(HAL_State_ON);
    }
    // Timer2 configuration
    else
    {
        // Timer2: 1T mode and initial value. prescaler is ignored, no interrupt.
        TIM_Timer2_Set1TMode(_1TMode);
        TIM_Timer2_SetInitValue(init >> 8, init & 0xFF);
        TIM_Timer2_SetRunState(HAL_State_ON);
    }
}

putchar()

int putchar

(

int

dat

)

Definition at line 90 of file fw_uart.c.

                     {
    UART1_WriteBuffer(dat);
    while(!TI);
    UART1_ClearTxInterrupt();
    return dat;
}

UART1_Config8bitUart()

void UART1_Config8bitUart	(	UART1_BaudSource_t	baudSource,
		HAL_State_t	_1TMode,
		uint32_t	baudrate
	)

Mode1: 8-bit UART; dynamic baud-rate; 10-bit frame: 1 start, 8 data(lsb), 1 stop; clocked by Timer1 or Timer2

Definition at line 56 of file fw_uart.c.

{
    uint16_t init;
    SM0=0; SM1=1;
    init = UART_Timer_InitValueCalculate(__SYSCLOCK, _1TMode, baudrate);
    _UART1_ConfigDynUart(baudSource, _1TMode, init);
}

UART1_Config9bitUart()

void UART1_Config9bitUart	(	UART1_BaudSource_t	baudSource,
		HAL_State_t	_1TMode,
		uint32_t	baudrate
	)

Mode3: 9-bit UART; dynamic baud-rate; 11-bit frame: 1 start, 8 data(lsb), 1 programmable, 1 stop; clocked by Timer1 or Timer2

Definition at line 64 of file fw_uart.c.

{
    uint16_t init;
    SM0=1; SM1=1;
    init = UART_Timer_InitValueCalculate(__SYSCLOCK, _1TMode, baudrate);
    _UART1_ConfigDynUart(baudSource, _1TMode, init);
}

UART1_TxChar()

void UART1_TxChar

(

char

dat

)

FIXME: If place this in first with following TXString(), sending may not work. didn't find the reason

Definition at line 72 of file fw_uart.c.

{
    UART1_WriteBuffer(dat);
    while(!TI);
    UART1_ClearTxInterrupt();
}

UART1_TxHex()

void UART1_TxHex

(

uint8_t

hex

)

Definition at line 79 of file fw_uart.c.

{
    UART1_TxChar(HEX_TABLE[hex >> 4]);
    UART1_TxChar(HEX_TABLE[hex & 0xF]);
}

UART1_TxString()

void UART1_TxString

(

uint8_t *

str

)

Definition at line 85 of file fw_uart.c.

{
    while (*str) UART1_TxChar(*str++);
}

UART2_Config()

void UART2_Config	(	HAL_State_t	_1TMode,
		uint32_t	baudrate
	)

Dynamic baud-rate, provided by Timer2

Definition at line 102 of file fw_uart.c.

{
    uint16_t init;
 
    init = UART_Timer_InitValueCalculate(__SYSCLOCK, _1TMode, baudrate);
    // Timer2: 1T mode and initial value. prescaler is ignored, no interrupt.
    TIM_Timer2_Set1TMode(_1TMode);
    TIM_Timer2_SetInitValue(init >> 8, init & 0xFF);
    TIM_Timer2_SetRunState(HAL_State_ON);
}

UART2_TxChar()

void UART2_TxChar

(

char

dat

)

Definition at line 113 of file fw_uart.c.

{
    UART2_WriteBuffer(dat);
    while(!UART2_TxFinished());
    UART2_ClearTxInterrupt();
}

UART2_TxHex()

void UART2_TxHex

(

uint8_t

hex

)

Definition at line 120 of file fw_uart.c.

{
    UART2_TxChar(HEX_TABLE[hex >> 4]);
    UART2_TxChar(HEX_TABLE[hex & 0xF]);
}

UART2_TxString()

void UART2_TxString

(

uint8_t *

str

)

Definition at line 126 of file fw_uart.c.

{
    while (*str) UART2_TxChar(*str++);
}

UART3_ConfigOnTimer2()

void UART3_ConfigOnTimer2	(	HAL_State_t	_1TMode,
		uint32_t	baudrate
	)

dynamic baud-rate from timer2 or timer3

Definition at line 136 of file fw_uart.c.

{
    uint16_t init;
 
    UART3_SetBaudSource(0x00);
    init = UART_Timer_InitValueCalculate(__SYSCLOCK, _1TMode, baudrate);
    // Timer2: 1T mode and initial value. prescaler is ignored, no interrupt.
    TIM_Timer2_Set1TMode(_1TMode);
    TIM_Timer2_SetInitValue(init >> 8, init & 0xFF);
    TIM_Timer2_SetRunState(HAL_State_ON);
}

UART3_ConfigOnTimer3()

void UART3_ConfigOnTimer3	(	HAL_State_t	_1TMode,
		uint32_t	baudrate
	)

Definition at line 148 of file fw_uart.c.

{
    uint16_t init;
 
    UART3_SetBaudSource(0x01);
    init = UART_Timer_InitValueCalculate(__SYSCLOCK, _1TMode, baudrate);
    // Timer3: 1T mode and initial value. prescaler is ignored, no interrupt.
    TIM_Timer3_Set1TMode(_1TMode);
    TIM_Timer3_SetInitValue(init >> 8, init & 0xFF);
    TIM_Timer3_SetRunState(HAL_State_ON);
}

UART4_ConfigOnTimer2()

void UART4_ConfigOnTimer2	(	HAL_State_t	_1TMode,
		uint32_t	baudrate
	)

dynamic baud-rate from timer2 or timer4

Definition at line 165 of file fw_uart.c.

{
    uint16_t init;
 
    UART4_SetBaudSource(0x00);
    init = UART_Timer_InitValueCalculate(__SYSCLOCK, _1TMode, baudrate);
    TIM_Timer2_Set1TMode(_1TMode);
    TIM_Timer2_SetInitValue(init >> 8, init & 0xFF);
    TIM_Timer2_SetRunState(HAL_State_ON);
}

UART4_ConfigOnTimer4()

void UART4_ConfigOnTimer4	(	HAL_State_t	_1TMode,
		uint32_t	baudrate
	)

Definition at line 176 of file fw_uart.c.

{
    uint16_t init;
 
    UART4_SetBaudSource(0x01);
    init = UART_Timer_InitValueCalculate(__SYSCLOCK, _1TMode, baudrate);
    TIM_Timer4_Set1TMode(_1TMode);
    TIM_Timer4_SetInitValue(init >> 8, init & 0xFF);
    TIM_Timer4_SetRunState(HAL_State_ON);
}

UART_Timer_InitValueCalculate()

int16_t UART_Timer_InitValueCalculate	(	uint32_t	sysclk,
		HAL_State_t	_1TMode,
		uint32_t	baudrate
	)

Definition at line 20 of file fw_uart.c.

{
    uint32_t value;
    value = sysclk / (4 * baudrate);
    if (!_1TMode)
        value = value / 12;
    if (value > 0xFFFF)
        return 0;
    else
        return 0xFFFF - value + 1;
}