mbed library sources: Modified to operate FRDM-KL25Z at 48MHz from internal 32kHz oscillator (nothing else changed).
Fork of mbed-src by
The only file that changed is: mbed-src-FLL48/targets/cmsis/TARGET_Freescale/TARGET_KL25Z/system_MKL25Z4.h
Diff: targets/cmsis/TARGET_NXP/TARGET_LPC11CXX/TOOLCHAIN_GCC_CS/sys.cpp
- Revision:
- 20:4263a77256ae
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/cmsis/TARGET_NXP/TARGET_LPC11CXX/TOOLCHAIN_GCC_CS/sys.cpp Tue Sep 10 15:14:19 2013 +0300 @@ -0,0 +1,79 @@ +#include "cmsis.h" +#include <sys/types.h> +#include <errno.h> + +extern "C" { + +struct SCS3Regions { + unsigned long Dummy; + unsigned long* InitRam; + unsigned long* StartRam; + unsigned long InitSizeRam; + unsigned long ZeroSizeRam; +}; + +extern unsigned long __cs3_regions; +extern unsigned long __cs3_heap_start; + +int main(void); +void __libc_init_array(void); +void exit(int ErrorCode); + +static void *heap_pointer = NULL; + +void __cs3_start_c(void) { + static SCS3Regions* pCS3Regions = (SCS3Regions*)&__cs3_regions; + unsigned long* pulDest; + unsigned long* pulSrc; + unsigned long ByteCount; + unsigned long i; + + pulSrc = pCS3Regions->InitRam; + pulDest = pCS3Regions->StartRam; + ByteCount = pCS3Regions->InitSizeRam; + if (pulSrc != pulDest) { + for(i = 0 ; i < ByteCount ; i += sizeof(unsigned long)) { + *(pulDest++) = *(pulSrc++); + } + } else { + pulDest = (unsigned long*)(void*)((char*)pulDest + ByteCount); + } + + ByteCount = pCS3Regions->ZeroSizeRam; + for(i = 0 ; i < ByteCount ; i += sizeof(unsigned long)) { + *(pulDest++) = 0; + } + + heap_pointer = &__cs3_heap_start; + __libc_init_array(); + exit(main()); +} + +int _kill(int pid, int sig) { + errno = EINVAL; + return -1; +} + +void _exit(int status) { + exit(status); +} + +int _getpid(void) { + return 1; +} + +void *_sbrk(unsigned int incr) { + void *mem; + + unsigned int next = ((((unsigned int)heap_pointer + incr) + 7) & ~7); + if (next > __get_MSP()) { + mem = NULL; + } else { + mem = (void *)heap_pointer; + } + heap_pointer = (void *)next; + + return mem; +} + +}