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add debug code to helix/serial.c

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pull/3608/head
mtei 7 years ago
parent 518e6134b5
commit 7f5e5c4563
2 changed files with 121 additions and 0 deletions
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27
keyboards/helix/serial.c
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@ -79,6 +79,7 @@ void serial_delay_half2(void) {
inline static void serial_output(void) ALWAYS_INLINE;
inline static
void serial_output(void) {
debug_output_mode();
SERIAL_PIN_DDR |= SERIAL_PIN_MASK;
}
@ -86,6 +87,7 @@ void serial_output(void) {
inline static void serial_input_with_pullup(void) ALWAYS_INLINE;
inline static
void serial_input_with_pullup(void) {
debug_input_mode();
SERIAL_PIN_DDR &= ~SERIAL_PIN_MASK;
SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
}
@ -108,11 +110,13 @@ void serial_high(void) {
}
void serial_master_init(void) {
serial_debug_init();
serial_output();
serial_high();
}
void serial_slave_init(void) {
serial_debug_init();
serial_input_with_pullup();
#if SERIAL_PIN_MASK == _BV(PD0)
@ -133,19 +137,24 @@ void serial_slave_init(void) {
// Used by the sender to synchronize timing with the reciver.
static
void sync_recv(void) {
debug_sync_start();
for (uint8_t i = 0; i < SERIAL_DELAY*5 && serial_read_pin(); i++ ) {
debug_sync_end(); debug_sync_start();
}
// This shouldn't hang if the slave disconnects because the
// serial line will float to high if the slave does disconnect.
while (!serial_read_pin());
debug_sync_end();
}
// Used by the reciver to send a synchronization signal to the sender.
static
void sync_send(void) {
debug_sync_start();
serial_low();
serial_delay();
serial_high();
debug_sync_end();
}
// Reads a byte from the serial line
@ -155,9 +164,12 @@ uint8_t serial_read_byte(void) {
_delay_sub_us(READ_WRITE_START_ADJUST);
for ( uint8_t i = 0; i < 8; ++i) {
serial_delay_half1(); // read the middle of pulses
debug_recvsample();
byte = (byte << 1) | serial_read_pin();
debug_recvsample();
_delay_sub_us(READ_WRITE_WIDTH_ADJUST);
serial_delay_half2();
debug_dummy_delay_recv();
}
return byte;
}
@ -173,7 +185,10 @@ void serial_write_byte(uint8_t data) {
serial_low();
}
b >>= 1;
debug_recvsample();
serial_delay();
debug_recvsample();
debug_dummy_delay_send();
}
serial_low(); // sync_send() / senc_recv() need raise edge
}
@ -185,11 +200,15 @@ void serial_send_packet(uint8_t *buffer, uint8_t size) {
uint8_t data;
data = buffer[i];
sync_send();
debug_bytewidth_start();
serial_write_byte(data);
debug_bytewidth_end();
checksum += data;
}
sync_send();
debug_bytewidth_start();
serial_write_byte(checksum);
debug_bytewidth_end();
}
static
@ -198,12 +217,16 @@ uint8_t serial_recive_packet(uint8_t *buffer, uint8_t size) {
for (uint8_t i = 0; i < size; ++i) {
uint8_t data;
sync_recv();
debug_bytewidth_start();
data = serial_read_byte();
debug_bytewidth_end();
buffer[i] = data;
checksum_computed += data;
}
sync_recv();
debug_bytewidth_start();
uint8_t checksum_received = serial_read_byte();
debug_bytewidth_end();
return checksum_computed != checksum_received;
}
@ -228,6 +251,8 @@ void change_reciver2sender(void) {
// interrupt handle to be used by the slave device
ISR(SERIAL_PIN_INTERRUPT) {
debug_output_mode(); debug_input_mode(); // indicate intterupt entry
serial_low();
serial_output();
@ -245,6 +270,7 @@ ISR(SERIAL_PIN_INTERRUPT) {
}
sync_recv(); //weit master output to high
debug_output_mode(); debug_input_mode(); // indicate intterupt exit
}
inline
@ -298,6 +324,7 @@ int serial_update_buffers(void) {
// always, release the line when not in use
sync_send();
debug_input_mode(); debug_output_mode(); // indicate intterupt exit
sei();
return 0;

94
keyboards/helix/serial.h
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@ -24,4 +24,98 @@ void serial_slave_init(void);
int serial_update_buffers(void);
bool serial_slave_data_corrupt(void);
// debug flags
#define SERIAL_DEBUG_MODE_WATCH_OUTMODE 0x1
#define SERIAL_DEBUG_MODE_WATCH_RCVSAMPLE 0x2
#define SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH 0x4
#define SERIAL_DEBUG_MODE_WATCH_SYNC 0x8
#define SERIAL_DEBUG_MODE_WATCH_IOCHG 0x10
#define SERIAL_DEBUG_MODE_WATCH_PARITY 0x20
//#define SERIAL_DEBUG_MODE SERIAL_DEBUG_MODE_WATCH_OUTMODE
//#define SERIAL_DEBUG_MODE SERIAL_DEBUG_MODE_WATCH_RCVSAMPLE
//#define SERIAL_DEBUG_MODE SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH
//#define SERIAL_DEBUG_MODE (SERIAL_DEBUG_MODE_WATCH_RCVSAMPLE|SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH)
//#define SERIAL_DEBUG_MODE SERIAL_DEBUG_MODE_WATCH_SYNC
//#define SERIAL_DEBUG_MODE (SERIAL_DEBUG_MODE_WATCH_RCVSAMPLE|SERIAL_DEBUG_MODE_WATCH_SYNC)
//#define SERIAL_DEBUG_MODE SERIAL_DEBUG_MODE_WATCH_IOCHG
//#define SERIAL_DEBUG_MODE (SERIAL_DEBUG_MODE_WATCH_IOCHG|SERIAL_DEBUG_MODE_WATCH_SYNC)
//#define SERIAL_DEBUG_MODE SERIAL_DEBUG_MODE_WATCH_PARITY
// Helix keyboard unused port (for Logic analyzer or oscilloscope)
#ifdef SERIAL_DEBUG_MODE
#define SERIAL_DBGPIN_DDR DDRB
#define SERIAL_DBGPIN_PORT PORTB
#define SERIAL_DBGPIN_MASK _BV(PB5)
#endif
#ifdef SERIAL_DEBUG_MODE
#define serial_debug_init() SERIAL_DBGPIN_DDR |= SERIAL_DBGPIN_MASK
#else
#define serial_debug_init()
#endif
#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_OUTMODE
#define debug_output_mode() SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK
#define debug_input_mode() SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK
#else
#define debug_output_mode()
#define debug_input_mode()
#endif
#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_RCVSAMPLE
#define debug_recvsample() SERIAL_DBGPIN_PORT ^= SERIAL_DBGPIN_MASK
#else
#define debug_recvsample()
#endif
#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_BYTEWIDTH
#define debug_bytewidth_start() SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK
#define debug_bytewidth_end() SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK
#else
#define debug_bytewidth_start()
#define debug_bytewidth_end()
#endif
#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_SYNC
#define debug_sync_start() SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK
#define debug_sync_end() SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK
#else
#define debug_sync_start()
#define debug_sync_end()
#endif
#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_IOCHG
#define debug_iochg_on() SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK
#define debug_iochg_off() SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK
#else
#define debug_iochg_on()
#define debug_iochg_off()
#endif
#if SERIAL_DEBUG_MODE & SERIAL_DEBUG_MODE_WATCH_PARITY
#define debug_parity_on() SERIAL_DBGPIN_PORT |= SERIAL_DBGPIN_MASK
#define debug_parity_off() SERIAL_DBGPIN_PORT &= ~SERIAL_DBGPIN_MASK
#else
#define debug_parity_on()
#define debug_parity_off()
#endif
#define SYNC_DEBUG_MODE 0
#if SYNC_DEBUG_MODE == 0
#define debug_dummy_delay_recv()
#define debug_dummy_delay_send()
#endif
#if SYNC_DEBUG_MODE == 1
#define debug_dummy_delay_recv() _delay_us(3); _delay_sub_us(2)
#define debug_dummy_delay_send()
#endif
#if SYNC_DEBUG_MODE == 2
#define debug_dummy_delay_recv()
#define debug_dummy_delay_send() _delay_us(3); _delay_sub_us(2)
#endif
#endif /* SOFT_SERIAL_H */

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