mirror of
https://github.com/qmk/qmk_firmware.git
synced 2026-10-02 06:49:16 +02:00
helix serial.c debugging...
This commit is contained in:
mtei
+133
-42
@@ -14,9 +14,16 @@
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#ifdef USE_SERIAL
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#define _delay_sub_us(x) __builtin_avr_delay_cycles(x)
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// Serial pulse period in microseconds. Its probably a bad idea to lower this
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// value.
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#define SERIAL_DELAY 30
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#define SERIAL_DELAY 6 // micro sec
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#define READ_WRITE_START_ADJUST 20 // cycles
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#define READ_WRITE_WIDTH_ADJUST 10 // cycles
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#define SERIAL_DELAY_HALF1 (SERIAL_DELAY/2)
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#define SERIAL_DELAY_HALF2 (SERIAL_DELAY - SERIAL_DELAY/2)
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uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0};
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uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {0};
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@@ -30,13 +37,13 @@ void serial_delay(void) {
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}
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inline static
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void serial_delay_half(void) {
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_delay_us(SERIAL_DELAY/2);
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void serial_delay_half1(void) {
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_delay_us(SERIAL_DELAY_HALF1);
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}
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inline static
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void serial_delay_quart(void) {
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_delay_us(SERIAL_DELAY/4);
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void serial_delay_half2(void) {
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_delay_us(SERIAL_DELAY_HALF2);
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}
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inline static
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@@ -116,9 +123,10 @@ void sync_recv(void) {
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while (!serial_read_pin());
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_SYNC
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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_delay_us(3);
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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//_delay_us(3);
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//SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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#endif
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#if 0
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//serial_delay();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_SYNC
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_delay_us(SERIAL_DELAY-8);
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@@ -126,6 +134,7 @@ void sync_recv(void) {
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#else
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_delay_us(SERIAL_DELAY-5);
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#endif
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#endif
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}
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// Used by the slave to send a synchronization signal to the master.
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@@ -149,85 +158,120 @@ void sync_send(void) {
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static
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uint8_t serial_read_byte(void) {
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uint8_t byte = 0;
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serial_input();
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_delay_sub_us(READ_WRITE_START_ADJUST);
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for ( uint8_t i = 0; i < 8; ++i) {
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serial_delay_half1(); // read the middle of pulses
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byte = (byte << 1) | serial_read_pin();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_RCVSAMPLE
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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_delay_us(1);
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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serial_delay();
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SERIAL_DBGPIN_PORT ^= SERIAL_DBGPIN_MASK;
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//_delay_us(1);
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_delay_sub_us(READ_WRITE_WIDTH_ADJUST);
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SERIAL_DBGPIN_PORT ^= SERIAL_DBGPIN_MASK;
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serial_delay_half2();
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#else
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serial_delay();
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_delay_us(1);
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serial_delay_half2();
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//_delay_us(1);
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_delay_sub_us(READ_WRITE_WIDTH_ADJUST);
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#endif
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}
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return byte;
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}
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// Sends a byte with MSB ordering
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static
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void serial_write_byte(uint8_t data) {
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uint8_t b = 8;
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serial_output();
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while( b-- ) {
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if(data & (1 << b)) {
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uint8_t b = 1<<7;
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//serial_output();
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while( b ) {
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if(data & b) {
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serial_high();
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} else {
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serial_low();
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}
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b >>= 1;
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_RCVSAMPLE
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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SERIAL_DBGPIN_PORT ^= SERIAL_DBGPIN_MASK;
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#endif
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serial_delay();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_RCVSAMPLE
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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SERIAL_DBGPIN_PORT ^= SERIAL_DBGPIN_MASK;
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#endif
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}
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serial_low();
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}
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// interrupt handle to be used by the slave device
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ISR(SERIAL_PIN_INTERRUPT) {
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sync_send();
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// slave send phase
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uint8_t checksum = 0;
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for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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#endif
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serial_write_byte(serial_slave_buffer[i]);
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#endif
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sync_send();
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checksum += serial_slave_buffer[i];
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}
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serial_write_byte(checksum);
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serial_low();
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// slave switch to input
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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//1
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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_delay_us(1);
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#endif
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sync_send();
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// wait for the sync to finish sending
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#endif
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serial_delay_half1();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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//2
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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_delay_us(1);
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#endif
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serial_low();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#endif
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serial_input();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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//3
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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_delay_us(1);
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#endif
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serial_delay();
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// read the middle of pulses
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#if SERIAL_DEBUG_MODE & (SERIAL_DEBUG_MODE_WATCH_SYNC|SERIAL_DEBUG_MODE_WATCH_RCVSAMPLE)
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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#endif
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_delay_us(SERIAL_DELAY/2);
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#if SERIAL_DEBUG_MODE & (SERIAL_DEBUG_MODE_WATCH_SYNC|SERIAL_DEBUG_MODE_WATCH_RCVSAMPLE)
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#endif
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// slave recv phase
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sync_recv();
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uint8_t checksum_computed = 0;
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for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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#endif
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serial_master_buffer[i] = serial_read_byte();
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sync_send();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#endif
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sync_recv();
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checksum_computed += serial_master_buffer[i];
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}
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uint8_t checksum_received = serial_read_byte();
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sync_send();
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serial_input(); // end transaction
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if ( checksum_computed != checksum_received ) {
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status |= SLAVE_DATA_CORRUPT;
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} else {
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status &= ~SLAVE_DATA_CORRUPT;
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}
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sync_recv(); //weit master output to hight
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}
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inline
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@@ -258,41 +302,88 @@ int serial_update_buffers(void) {
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// check if the slave is present
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if (serial_read_pin()) {
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// slave failed to pull the line low, assume not present
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serial_output();
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serial_high();
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sei();
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return 1;
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}
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// master recv phase
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// if the slave is present syncronize with it
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sync_recv();
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uint8_t checksum_computed = 0;
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// receive data from the slave
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for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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#endif
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serial_slave_buffer[i] = serial_read_byte();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#endif
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sync_recv();
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checksum_computed += serial_slave_buffer[i];
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}
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uint8_t checksum_received = serial_read_byte();
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sync_recv();
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if (checksum_computed != checksum_received) {
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serial_output();
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serial_high();
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sei();
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return 2;
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}
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// master switch to output
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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//1
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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_delay_us(1);
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#endif
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sync_recv();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#endif
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serial_delay();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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//2
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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_delay_us(1);
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#endif
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serial_output();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#endif
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serial_low();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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//3
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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_delay_us(1);
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#endif
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serial_delay_half1();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#endif
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// master send phase
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uint8_t checksum = 0;
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// send data to the slave
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sync_send();
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for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH
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SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK;
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#endif
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serial_write_byte(serial_master_buffer[i]);
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sync_recv();
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#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH
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SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK;
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#endif
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sync_send();
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checksum += serial_master_buffer[i];
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}
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serial_write_byte(checksum);
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sync_recv();
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// always, release the line when not in use
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serial_output();
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serial_high();
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sync_send();
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sei();
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return 0;
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