Function doRemoteCommand

xs/platforms/zephyr/xsPlatform.c:548–766

}

void doRemoteCommand(txMachine *the, uint8_t *cmd, uint32_t cmdLen)
{
	uint16_t resultID = 0;
	int16_t resultCode = 0;
	uint8_t cmdID;

	if (!cmdLen)
		return;

	cmdID = *cmd++;
	cmdLen -= 1;

	if (cmdLen >= 2) {
		resultID = (cmd[0] << 8) | cmd[1];
		cmd += 2, cmdLen -= 2;

		the->echoBuffer[0] = 5;
		the->echoBuffer[1] = resultID >> 8;
		the->echoBuffer[2] = resultID & 0xff;
		the->echoBuffer[3] = 0;
		the->echoBuffer[4] = 0;
		the->echoOffset = 5;
	}

	switch (cmdID) {
		case 1:		// restart
			the->wsState = 18;
			break;

#if MODDEF_XS_MODS
		case 2: {		// uninstall
			uint8_t erase[16] = {0};
			uint32_t offset = (uintptr_t)kModulesStart - (uintptr_t)kFlashStart;
			if (!modSPIWrite(offset, sizeof(erase), erase))
				resultCode = -2;
			} break;

		case 3: {	// install some
			uint32_t offset = c_read32be(cmd);
			cmd += 4, cmdLen -= 4;
			if ((offset + cmdLen) > kModulesByteLength) {
				resultCode = -3;
				break;
			}

			offset += (uintptr_t)kModulesStart - (uintptr_t)kFlashStart;

			int firstSector = offset / kFlashSectorSize, lastSector = (offset + cmdLen) / kFlashSectorSize;
			if (!((offset + cmdLen) % kFlashSectorSize))	// ends on sector boundary, don't fall into next sector
				lastSector -= 1;
			if (!(offset % kFlashSectorSize))			// starts on sector boundary
				modSPIErase(offset, kFlashSectorSize * ((lastSector - firstSector) + 1));
			else if (firstSector != lastSector)
				modSPIErase((firstSector + 1) * kFlashSectorSize, kFlashSectorSize * (lastSector - firstSector));	// crosses into a new sector

			int write = cmdLen - (cmdLen % kModulesWriteAlign);
			if (!modSPIWrite(offset, write, cmd))
				resultCode = -1;