在coldfire6.4环境下，RAM方式 /*
* File: main.c
* Purpose: sample program
*
*/
#include "support_common.h" /* include peripheral declarations and more */
#include <stdio.h> int main(void)
{
printf("Hello World in C\n\r");
fflush(stdout);
while(1) {
printf("DEBUG"); }
} 串口正常输出 而在coldfire7.1下，INTERNEL_RAM方式 /*
* main implementation: use this sample to create your own application
*
*/
#include "support_common.h" /* include peripheral declarations and more */
#if (CONSOLE_IO_SUPPORT || ENABLE_UART_SUPPORT)
/* Standard IO is only possible if Console or UART support is enabled. */
#include <stdio.h>
#endif int main(void)
{
int counter = 0;
#if (CONSOLE_IO_SUPPORT || ENABLE_UART_SUPPORT)
printf("Hello World in C from MCF52233 derivative on MCF52233 board\n\r");
fflush(stdout);
#endif
for(;;) {
counter++;
printf("DEBUG");
}
} 出现错误： Link Error : Undefined : "InitializeUART"
Referenced from "__init_uart_console" in C_4i_CF_SZ_MSL.a Link Error : Undefined : "WriteUARTN"
Referenced from "__write_console" in C_4i_CF_SZ_MSL.a Link failed. 是何原因
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