Content originally posted in LPCWare by pito on Sat Jul 06 05:47:04 MST 2013 Hi, I am trying to printf from following code:
#include "LPC13xx.h" /* LPC13xx definitions */
#include "clkconfig.h"
#include "gpio.h"
#include "uart.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <cr_section_macros.h>
#include <NXP/crp.h>
__CRP const unsigned int CRP_WORD = CRP_NO_CRP ;
// Function __write()
uint32_t __write (int iFileHandle, uint8_t *pcBuffer, uint32_t iLength)
{
//this function is writing the printf buffer to uart
UARTSend(pcBuffer,iLength);
return iLength;
}
int main (void) {
int dummy;
GPIOInit();
UARTInit(115200);
// Set port for LED to output (1)
GPIOSetDir( 0, 7, 1 ); //LED
//GPIOSetDir( 1, 6, 0 ); //Rx
//GPIOSetDir( 1, 7, 1 ); //Tx
dummy = 1111;
while (1) /* Loop forever */
{
GPIOSetValue( 0, 7, 1 );
printf("This is a Test = %d \r\n", dummy);
GPIOSetValue( 0, 7, 0 );
dummy ++;
}
}
I set lib to Redlib(nohost), however I see no activity on Tx. I am uploading via uart with flashmagic, the com works fine. The lpcxpresso IDE is the latest, build for lpc1343.
Building target: LPCX1343_cmsis2_blinky.axf
Invoking: MCU Linker
arm-none-eabi-gcc -nostdlib -L"C:\MyCode\ARM\LPCxpresso\CMSISv2p00_LPC13xx\Release" -L"C:\MyCode\ARM\LPCxpresso\LPC13xx_cmsis2_Lib\Release" -Xlinker --gc-sections -Xlinker -Map=LPCX1343_cmsis2_blinky.map -mcpu=cortex-m3 -mthumb -T "LPCX1343_cmsis2_blinky_Release.ld" -o "LPCX1343_cmsis2_blinky.axf" ./src/blinky.o ./src/cr_startup_lpc13.o ./src/timer16_int.o -lCMSISv2p00_LPC13xx -lLPC13xx_cmsis2_Lib
Finished building target: LPCX1343_cmsis2_blinky.axf
make --no-print-directory post-build
Performing post-build steps
arm-none-eabi-size LPCX1343_cmsis2_blinky.axf; arm-none-eabi-objcopy -O ihex LPCX1343_cmsis2_blinky.axf LPCX1343_cmsis2_blinky.hex ;
text data bss dec hex filename
12712 8 416 13136 3350 LPCX1343_cmsis2_blinky.axf
Content originally posted in LPCWare by CodeRedSupport on Sun Jul 07 01:45:21 MST 2013 You need to be using [FONT=Courier New]__sys_write[/FONT], not [FONT=Courier New]__write[/FONT]
Content originally posted in LPCWare by pito on Sat Jul 06 07:45:45 MST 2013 OK, I had to add "retarget.c" into the build instead of my __write() function above..
