Writing Configuration Memory

[ktallevi]

Im writing a bootloader for a PIC18F8722 and seem to be having an issue. The command write_configuration_memory crashes/freezes the program.

Here is a small snippet of the code...

int ConfigMemoryRegister[3];
ConfigMemoryRegister[0] = 0x00;
ConfigMemoryRegister[1] = 0x43;
ConfigMemoryRegister[2] = 0x16;

write_configuration_memory(ConfigMemoryRegister, 3);

I halt the program and read the chip, the configuration memory DOES get changed successfully, but there still seems to be something causing the program to crash.

any ideas?

[PCM programmer]

I've never tried to write the Config bits while the program is running,
so I don't know if this works.

But, reading the CCS manual, it says this:

[ktallevi]

Thanks PCM Programmer, it appears the program does NOT crash if you write all 14 bytes, eg.

int ConfigMemoryRegister[14];

ConfigMemoryRegister[0] = 0x00;
ConfigMemoryRegister[1] = 0x42;
ConfigMemoryRegister[2] = 0x1E;
ConfigMemoryRegister[3] = 0x0E;
ConfigMemoryRegister[4] = 0xF3;
ConfigMemoryRegister[5] = 0x87;
ConfigMemoryRegister[6] = 0xA0;
ConfigMemoryRegister[7] = 0x00;
ConfigMemoryRegister[8] = 0xFF;
ConfigMemoryRegister[9] = 0xC0;
ConfigMemoryRegister[10] = 0xFF;
ConfigMemoryRegister[11] = 0xE0;
ConfigMemoryRegister[12] = 0xFF;
ConfigMemoryRegister[13] = 0x40;


write_configuration_memory(0,ConfigMemoryRegister, 14);