Content originally posted in LPCWare by Gmatarrubia on Thu Mar 05 14:18:10 MST 2015 Hi,
I need to write/read some variables in EEPROM memory. I'm using mbed libraries that It doesn't have any API for that purpose. So I'm trying to use IAP commands. This is my code:
#include "mbed.h"
enum command_code
{
IAPCommand_EEPROM_Write = 61,
IAPCommand_EEPROM_Read,
};
#define IAP_LOCATION 0x03000200
typedef void (*IAP_call)(unsigned int [], unsigned int []);
IAP_call iap_entry = reinterpret_cast<IAP_call>(IAP_LOCATION);
unsigned int IAP_command[ 5 ];
unsigned int IAP_result[ 5 ];
int cclk_kHz = SystemCoreClock / 1000;
int write_eeprom( uint32_t source_addr, uint32_t target_addr, int size ) {
IAP_command[ 0 ] = IAPCommand_EEPROM_Write;
IAP_command[ 1 ] = target_addr; // Destination EEPROM address where data bytes are to be written.
IAP_command[ 2 ] = (unsigned int)source_addr; // Source RAM address from which data bytes are to be read. This address should be a word boundary.
IAP_command[ 3 ] = size; // Number of bytes to be written. Should be 256 | 512 | 1024 | 4096.
IAP_command[ 4 ] = cclk_kHz; // CPU Clock Frequency (CCLK) in kHz.
iap_entry( IAP_command, IAP_result );
return ( (int)IAP_result[ 0 ] );
}
int main () {
int num=15;
int addrEEPROM = 0x100;
while (1) {
write_eeprom((uint32_t)&num,add,256);
}
}
The code, IAP_LOCATION and so on is based on the datasheet. But I always get an "hardfault"
Someone knows how to read/write in the EEPROM? regards.
Content originally posted in LPCWare by Gmatarrubia on Fri Mar 06 05:38:33 MST 2015 I had seen this example but I cannot use #include "chip.h" because I'm using #include "mbed.h" and I cannot use both at the same time.
I've just get a successful write/read in the EEPROM. I've added in mbed libraries the code necessary to use IAP commands.
