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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);
}
Compiled on a PC, generates sequences you're not handling properly
# 15 CMD 11 (17) DELAY CMD 96 (150) DAT 80 . DAT FF . DAT 33 3 DAT 03 . DAT 01 . DAT 2C , DAT 2D - DAT 44 D DAT 03 . DAT 01 . DAT 2C , DAT 2D - DAT 55 U
Took liberties with the missing defines, but still looks broken to me.
>>if you are interested I can take screenshots with the assembler code. A listing file, or FromELF disassembly might be better, but the underlying logic is flawed. Instrument the code, understand what it actually does. Compiler doing what you tell it to do.