// Start a response, returns the partial CRC
uint16_t ICACHE_FLASH_ATTR
CMD_ResponseStart(uint16_t cmd, uint32_t callback, uint32_t _return, uint16_t argc) {
uint16_t crc = 0;
uart0_write_char(SLIP_START);
CMD_ProtoWriteBuf((uint8_t*)&cmd, 2);
crc = crc16_data((uint8_t*)&cmd, 2, crc);
CMD_ProtoWriteBuf((uint8_t*)&callback, 4);
crc = crc16_data((uint8_t*)&callback, 4, crc);
CMD_ProtoWriteBuf((uint8_t*)&_return, 4);
crc = crc16_data((uint8_t*)&_return, 4, crc);
CMD_ProtoWriteBuf((uint8_t*)&argc, 2);
crc = crc16_data((uint8_t*)&argc, 2, crc);
return crc;
}
ICACHE_FLASH_ATTR
uint16_t CMD_ResponseEnd(uint16_t crc)
{
CMD_ProtoWriteBuf((uint8_t*)&crc, 2);
uart0_write(SLIP_END);
return 0;
}
// Adds data to a response, returns the partial CRC
uint16_t ICACHE_FLASH_ATTR
CMD_ResponseBody(uint16_t crc_in, uint8_t* data, short len) {
short pad_len = len+3 - (len+3)%4; // round up to multiple of 4
CMD_ProtoWriteBuf((uint8_t*)&pad_len, 2);
crc_in = crc16_data((uint8_t*)&pad_len, 2, crc_in);
CMD_ProtoWriteBuf(data, len);
crc_in = crc16_data(data, len, crc_in);
if (pad_len > len) {
uint32_t temp = 0;
CMD_ProtoWriteBuf((uint8_t*)&temp, pad_len-len);
crc_in = crc16_data((uint8_t*)&temp, pad_len-len, crc_in);
}
return crc_in;
}
ICACHE_FLASH_ATTR
uint16 CMD_ResponseBody(uint16_t crc_in, uint8_t* data, uint16_t len)
{
uint8_t temp = 0;
uint16_t pad_len = len;
while(pad_len % 4 != 0)
pad_len++;
CMD_ProtoWriteBuf((uint8_t*)&pad_len, 2);
crc_in = crc16_data((uint8_t*)&pad_len, 2, crc_in);
while(len --){
CMD_ProtoWrite(*data);
crc_in = crc16_data((uint8_t*)data, 1, crc_in);
data ++;
if(pad_len > 0) pad_len --;
}
while(pad_len --){
CMD_ProtoWrite(temp);
crc_in = crc16_data((uint8_t*)&temp, 1, crc_in);
}
return crc_in;
}
// Ends a response
void ICACHE_FLASH_ATTR
CMD_ResponseEnd(uint16_t crc) {
CMD_ProtoWriteBuf((uint8_t*)&crc, 2);
uart0_write_char(SLIP_END);
}