/* ---------------------------------------------------------------------------- | |
* ATMEL Microcontroller Software Support | |
* ---------------------------------------------------------------------------- | |
* Copyright (c) 2009, Atmel Corporation | |
* | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* - Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the disclaimer below. | |
* | |
* Atmel's name may not be used to endorse or promote products derived from | |
* this software without specific prior written permission. | |
* | |
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR | |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, | |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, | |
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | |
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* ---------------------------------------------------------------------------- | |
*/ | |
/** | |
* \file | |
* | |
* Implements UART console. | |
* | |
*/ | |
/*---------------------------------------------------------------------------- | |
* Headers | |
*----------------------------------------------------------------------------*/ | |
#include "board.h" | |
#include <stdio.h> | |
#include <stdint.h> | |
#include "ringbuffer.h" | |
/*---------------------------------------------------------------------------- | |
* Definitions | |
*----------------------------------------------------------------------------*/ | |
/*---------------------------------------------------------------------------- | |
* Variables | |
*----------------------------------------------------------------------------*/ | |
/** Is Console Initialized. */ | |
static uint8_t _ucIsConsoleInitialized=0; | |
/** Ring buffer to queue data to be sent */ | |
static ringbuf uart_tx_buffer; | |
/** | |
* \brief Configures an USART peripheral with the specified parameters. | |
* | |
* \param baudrate Baudrate at which the USART should operate (in Hz). | |
* \param masterClock Frequency of the system master clock (in Hz). | |
*/ | |
extern void UART_Configure( uint32_t baudrate, uint32_t masterClock) | |
{ | |
const Pin pPins[] = CONSOLE_PINS; | |
Uart *pUart = CONSOLE_UART; | |
/* Configure PIO */ | |
PIO_Configure(pPins, PIO_LISTSIZE(pPins)); | |
/* Configure PMC */ | |
PMC->PMC_PCER0 = 1 << CONSOLE_ID; | |
/* Reset and disable receiver & transmitter */ | |
pUart->UART_CR = UART_CR_RSTRX | UART_CR_RSTTX | |
| UART_CR_RXDIS | UART_CR_TXDIS; | |
/* Configure mode */ | |
pUart->UART_MR = UART_MR_PAR_NO; | |
/* Configure baudrate */ | |
/* Asynchronous, no oversampling */ | |
pUart->UART_BRGR = (masterClock / baudrate) / 16; | |
/* Disable PDC channel */ | |
pUart->UART_PTCR = UART_PTCR_RXTDIS | UART_PTCR_TXTDIS; | |
/* Reset transmit ring buffer */ | |
rbuf_reset(&uart_tx_buffer); | |
/* Enable TX interrupts */ | |
pUart->UART_IER = UART_IER_TXRDY; | |
NVIC_EnableIRQ(CONSOLE_IRQ); | |
/* Enable receiver and transmitter */ | |
pUart->UART_CR = UART_CR_RXEN | UART_CR_TXEN; | |
/* Remember the configuration is complete */ | |
_ucIsConsoleInitialized=1 ; | |
} | |
/** Interrupt Service routine to transmit queued data */ | |
void CONSOLE_ISR(void) | |
{ | |
Uart *uart = CONSOLE_UART; | |
if (uart->UART_SR & UART_SR_TXRDY) { | |
if (!rbuf_is_empty(&uart_tx_buffer)) { | |
//uart->UART_IER = UART_IER_TXRDY; | |
uart->UART_THR = rbuf_read(&uart_tx_buffer); | |
} else { | |
uart->UART_IDR = UART_IER_TXRDY; | |
} | |
} | |
} | |
/** | |
* \brief Outputs a character on the UART line. | |
* | |
* \note This function is synchronous (i.e. uses polling). | |
* \param c Character to send. | |
*/ | |
extern void UART_PutChar( uint8_t c ) | |
{ | |
Uart *pUart = CONSOLE_UART ; | |
/* Initialize console is not already done */ | |
if ( !_ucIsConsoleInitialized ) | |
{ | |
UART_Configure(CONSOLE_BAUDRATE, BOARD_MCK); | |
} | |
/* Wait until there is space in the buffer */ | |
while (rbuf_is_full(&uart_tx_buffer)) { | |
if (pUart->UART_SR & UART_SR_TXEMPTY) { | |
pUart->UART_IER = UART_IER_TXRDY; | |
CONSOLE_ISR(); | |
} | |
} | |
/* Put character into buffer */ | |
rbuf_write(&uart_tx_buffer, c); | |
if (pUart->UART_SR & UART_SR_TXEMPTY) { | |
pUart->UART_IER = UART_IER_TXRDY; | |
CONSOLE_ISR(); | |
} | |
} | |
/** | |
* \brief Input a character from the UART line. | |
* | |
* \note This function is synchronous | |
* \return character received. | |
*/ | |
extern uint32_t UART_GetChar( void ) | |
{ | |
Uart *pUart = CONSOLE_UART ; | |
if ( !_ucIsConsoleInitialized ) | |
{ | |
UART_Configure(CONSOLE_BAUDRATE, BOARD_MCK); | |
} | |
while ( (pUart->UART_SR & UART_SR_RXRDY) == 0 ) | |
WDT_Restart(WDT); | |
return pUart->UART_RHR ; | |
} | |
/** | |
* \brief Check if there is Input from UART line. | |
* | |
* \return true if there is Input. | |
*/ | |
extern uint32_t UART_IsRxReady( void ) | |
{ | |
Uart *pUart = CONSOLE_UART; | |
if ( !_ucIsConsoleInitialized ) | |
{ | |
UART_Configure( CONSOLE_BAUDRATE, BOARD_MCK ) ; | |
} | |
return (pUart->UART_SR & UART_SR_RXRDY) > 0 ; | |
} | |
/** | |
* Displays the content of the given frame on the UART0. | |
* | |
* \param pucFrame Pointer to the frame to dump. | |
* \param dwSize Buffer size in bytes. | |
*/ | |
extern void UART_DumpFrame( uint8_t* pucFrame, uint32_t dwSize ) | |
{ | |
uint32_t dw ; | |
for ( dw=0 ; dw < dwSize ; dw++ ) | |
{ | |
printf( "%02X ", pucFrame[dw] ) ; | |
} | |
printf( "\n\r" ) ; | |
} | |
/** | |
* Displays the content of the given buffer on the UART0. | |
* | |
* \param pucBuffer Pointer to the buffer to dump. | |
* \param dwSize Buffer size in bytes. | |
* \param dwAddress Start address to display | |
*/ | |
extern void UART_DumpMemory( uint8_t* pucBuffer, uint32_t dwSize, uint32_t dwAddress ) | |
{ | |
uint32_t i ; | |
uint32_t j ; | |
uint32_t dwLastLineStart ; | |
uint8_t* pucTmp ; | |
for ( i=0 ; i < (dwSize / 16) ; i++ ) | |
{ | |
printf( "0x%08X: ", (unsigned int)(dwAddress + (i*16)) ) ; | |
pucTmp = (uint8_t*)&pucBuffer[i*16] ; | |
for ( j=0 ; j < 4 ; j++ ) | |
{ | |
printf( "%02X%02X%02X%02X ", pucTmp[0], pucTmp[1], pucTmp[2], pucTmp[3] ) ; | |
pucTmp += 4 ; | |
} | |
pucTmp=(uint8_t*)&pucBuffer[i*16] ; | |
for ( j=0 ; j < 16 ; j++ ) | |
{ | |
UART_PutChar( *pucTmp++ ) ; | |
} | |
printf( "\n\r" ) ; | |
} | |
if ( (dwSize%16) != 0 ) | |
{ | |
dwLastLineStart=dwSize - (dwSize%16) ; | |
printf( "0x%08X: ", (unsigned int)(dwAddress + dwLastLineStart) ) ; | |
for ( j=dwLastLineStart ; j < dwLastLineStart+16 ; j++ ) | |
{ | |
if ( (j!=dwLastLineStart) && (j%4 == 0) ) | |
{ | |
printf( " " ) ; | |
} | |
if ( j < dwSize ) | |
{ | |
printf( "%02X", pucBuffer[j] ) ; | |
} | |
else | |
{ | |
printf(" ") ; | |
} | |
} | |
printf( " " ) ; | |
for ( j=dwLastLineStart ; j < dwSize ; j++ ) | |
{ | |
UART_PutChar( pucBuffer[j] ) ; | |
} | |
printf( "\n\r" ) ; | |
} | |
} | |
/** | |
* Reads an integer | |
* | |
* \param pdwValue Pointer to the uint32_t variable to contain the input value. | |
*/ | |
extern uint32_t UART_GetInteger( uint32_t* pdwValue ) | |
{ | |
uint8_t ucKey ; | |
uint8_t ucNbNb=0 ; | |
uint32_t dwValue=0 ; | |
while ( 1 ) | |
{ | |
ucKey=UART_GetChar() ; | |
UART_PutChar( ucKey ) ; | |
if ( ucKey >= '0' && ucKey <= '9' ) | |
{ | |
dwValue = (dwValue * 10) + (ucKey - '0'); | |
ucNbNb++ ; | |
} | |
else | |
{ | |
if ( ucKey == 0x0D || ucKey == ' ' ) | |
{ | |
if ( ucNbNb == 0 ) | |
{ | |
printf( "\n\rWrite a number and press ENTER or SPACE!\n\r" ) ; | |
return 0 ; | |
} | |
else | |
{ | |
printf( "\n\r" ) ; | |
*pdwValue=dwValue ; | |
return 1 ; | |
} | |
} | |
else | |
{ | |
printf( "\n\r'%c' not a number!\n\r", ucKey ) ; | |
return 0 ; | |
} | |
} | |
WDT_Restart(WDT); | |
} | |
} | |
/** | |
* Reads an integer and check the value | |
* | |
* \param pdwValue Pointer to the uint32_t variable to contain the input value. | |
* \param dwMin Minimum value | |
* \param dwMax Maximum value | |
*/ | |
extern uint32_t UART_GetIntegerMinMax( uint32_t* pdwValue, uint32_t dwMin, uint32_t dwMax ) | |
{ | |
uint32_t dwValue=0 ; | |
if ( UART_GetInteger( &dwValue ) == 0 ) | |
{ | |
return 0 ; | |
} | |
if ( dwValue < dwMin || dwValue > dwMax ) | |
{ | |
printf( "\n\rThe number have to be between %d and %d\n\r", (int)dwMin, (int)dwMax ) ; | |
return 0 ; | |
} | |
printf( "\n\r" ) ; | |
*pdwValue = dwValue ; | |
return 1 ; | |
} | |
/** | |
* Reads an hexadecimal number | |
* | |
* \param pdwValue Pointer to the uint32_t variable to contain the input value. | |
*/ | |
extern uint32_t UART_GetHexa32( uint32_t* pdwValue ) | |
{ | |
uint8_t ucKey ; | |
uint32_t dw = 0 ; | |
uint32_t dwValue = 0 ; | |
for ( dw=0 ; dw < 8 ; dw++ ) | |
{ | |
ucKey = UART_GetChar() ; | |
UART_PutChar( ucKey ) ; | |
if ( ucKey >= '0' && ucKey <= '9' ) | |
{ | |
dwValue = (dwValue * 16) + (ucKey - '0') ; | |
} | |
else | |
{ | |
if ( ucKey >= 'A' && ucKey <= 'F' ) | |
{ | |
dwValue = (dwValue * 16) + (ucKey - 'A' + 10) ; | |
} | |
else | |
{ | |
if ( ucKey >= 'a' && ucKey <= 'f' ) | |
{ | |
dwValue = (dwValue * 16) + (ucKey - 'a' + 10) ; | |
} | |
else | |
{ | |
printf( "\n\rIt is not a hexa character!\n\r" ) ; | |
return 0 ; | |
} | |
} | |
} | |
} | |
printf("\n\r" ) ; | |
*pdwValue = dwValue ; | |
return 1 ; | |
} | |
#if defined __ICCARM__ /* IAR Ewarm 5.41+ */ | |
/** | |
* \brief Outputs a character on the UART. | |
* | |
* \param c Character to output. | |
* | |
* \return The character that was output. | |
*/ | |
extern WEAK signed int putchar( signed int c ) | |
{ | |
UART_PutChar( c ) ; | |
return c ; | |
} | |
#endif // defined __ICCARM__ | |