// Process and report status one line of incoming serial data. Performs an initial filtering
// by removing spaces and comments and capitalizing all letters.
void protocol_process()
{
uint8_t c;
while((c = serial_read()) != SERIAL_NO_DATA) {
if ((c == '\n') || (c == '\r')) { // End of line reached
// Runtime command check point before executing line. Prevent any furthur line executions.
// NOTE: If there is no line, this function should quickly return to the main program when
// the buffer empties of non-executable data.
protocol_execute_runtime();
if (sys.abort) {
return; // Bail to main program upon system abort
}
if (char_counter > 0) {// Line is complete. Then execute!
line[char_counter] = 0; // Terminate string
report_status_message(protocol_execute_line(line));
}
else {
// Empty or comment line. Skip block.
report_status_message(STATUS_OK); // Send status message for syncing purposes.
}
protocol_reset_line_buffer();
}
else {
if (iscomment) {
// Throw away all comment characters
if (c == ')') {
// End of comment. Resume line.
iscomment = false;
}
}
else {
if (c <= ' ') {
// Throw away whitepace and control characters
}
else
if (c == '/') {
// Block delete not supported. Ignore character.
}
else
if (c == '(') {
// Enable comments flag and ignore all characters until ')' or EOL.
iscomment = true;
}
else
if (char_counter >= LINE_BUFFER_SIZE-1) {
// Report line buffer overflow and reset
report_status_message(STATUS_OVERFLOW);
protocol_reset_line_buffer();
}
else
if (c >= 'a' && c <= 'z') { // Upcase lowercase
line[char_counter++] = c-'a'+'A';
}
else {
line[char_counter++] = c;
}
}
}
}
}
void protocol_init()
{
protocol_reset_line_buffer();
report_init_message(); // Welcome message
PINOUT_DDR &= ~(PINOUT_MASK); // Set as input pins
PINOUT_PORT |= PINOUT_MASK; // Enable internal pull-up resistors. Normal high operation.
PINOUT_PCMSK |= PINOUT_MASK; // Enable specific pins of the Pin Change Interrupt
PCICR |= (1 << PINOUT_INT); // Enable Pin Change Interrupt
}
void protocol_init()
{
protocol_reset_line_buffer();
report_init_message(); // Welcome message
//==========================================
// PINOUT_DDR &= ~(PINOUT_MASK); // Set as input pins //引脚设置为输入
// PINOUT_PORT |= PINOUT_MASK; // Enable internal pull-up resistors. Normal high operation. //预上拉
/*---------HW_GPIO_Init()---------*/
// PINOUT_PCMSK |= PINOUT_MASK; // Enable specific pins of the Pin Change Interrupt //打开对应引脚的PCI中断
// PCICR |= (1 << PINOUT_INT); // Enable Pin Change Interrupt //使能C口的PCI中断
/*---------HW_EXTI_Init()---------*/
//==========================================
}
