Read pointer when increasing address does not access data LPC2136

your help please, this pointer initially takes the first value extracted from the address, but when I try to increase the pointer to access the next value it does not do anything.(ARM7TDMI LPC2136):

void static commandList(const uint8_t *addr) {

uint8_t numCommands, numArgs; uint16_t ms;

numCommands = *(addr++); // Number of commands to follow
while(numCommands--) { // For each command... writecommand((uint8_t) *(addr++)); // Read, issue command numArgs = *(addr++); // Number of args to follow ms = numArgs & DELAY; // If hibit set, delay follows args numArgs &= ~DELAY; // Mask out delay bit while(numArgs--) { // For each argument... writedata(*(addr++)); // Read, issue argument }

Delay(ms);

}

}