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-rw-r--r--drivers/chibios/serial.c290
1 files changed, 0 insertions, 290 deletions
diff --git a/drivers/chibios/serial.c b/drivers/chibios/serial.c
deleted file mode 100644
index 54f7e1321f..0000000000
--- a/drivers/chibios/serial.c
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- * WARNING: be careful changing this code, it is very timing dependent
- */
-
-#include "quantum.h"
-#include "serial.h"
-#include "wait.h"
-
-#include <hal.h>
-
-// TODO: resolve/remove build warnings
-#if defined(RGBLIGHT_ENABLE) && defined(RGBLED_SPLIT) && defined(PROTOCOL_CHIBIOS) && defined(WS2812_DRIVER_BITBANG)
-# warning "RGBLED_SPLIT not supported with bitbang WS2812 driver"
-#endif
-
-// default wait implementation cannot be called within interrupt
-// this method seems to be more accurate than GPT timers
-#if PORT_SUPPORTS_RT == FALSE
-# error "chSysPolledDelayX method not supported on this platform"
-#else
-# undef wait_us
-# define wait_us(x) chSysPolledDelayX(US2RTC(STM32_SYSCLK, x))
-#endif
-
-#ifndef SELECT_SOFT_SERIAL_SPEED
-# define SELECT_SOFT_SERIAL_SPEED 1
-// TODO: correct speeds...
-// 0: about 189kbps (Experimental only)
-// 1: about 137kbps (default)
-// 2: about 75kbps
-// 3: about 39kbps
-// 4: about 26kbps
-// 5: about 20kbps
-#endif
-
-// Serial pulse period in microseconds. At the moment, going lower than 12 causes communication failure
-#if SELECT_SOFT_SERIAL_SPEED == 0
-# define SERIAL_DELAY 12
-#elif SELECT_SOFT_SERIAL_SPEED == 1
-# define SERIAL_DELAY 16
-#elif SELECT_SOFT_SERIAL_SPEED == 2
-# define SERIAL_DELAY 24
-#elif SELECT_SOFT_SERIAL_SPEED == 3
-# define SERIAL_DELAY 32
-#elif SELECT_SOFT_SERIAL_SPEED == 4
-# define SERIAL_DELAY 48
-#elif SELECT_SOFT_SERIAL_SPEED == 5
-# define SERIAL_DELAY 64
-#else
-# error invalid SELECT_SOFT_SERIAL_SPEED value
-#endif
-
-inline static void serial_delay(void) { wait_us(SERIAL_DELAY); }
-inline static void serial_delay_half(void) { wait_us(SERIAL_DELAY / 2); }
-inline static void serial_delay_blip(void) { wait_us(1); }
-inline static void serial_output(void) { setPinOutput(SOFT_SERIAL_PIN); }
-inline static void serial_input(void) { setPinInputHigh(SOFT_SERIAL_PIN); }
-inline static bool serial_read_pin(void) { return !!readPin(SOFT_SERIAL_PIN); }
-inline static void serial_low(void) { writePinLow(SOFT_SERIAL_PIN); }
-inline static void serial_high(void) { writePinHigh(SOFT_SERIAL_PIN); }
-
-void interrupt_handler(void *arg);
-
-// Use thread + palWaitLineTimeout instead of palSetLineCallback
-// - Methods like setPinOutput and palEnableLineEvent/palDisableLineEvent
-// cause the interrupt to lock up, which would limit to only receiving data...
-static THD_WORKING_AREA(waThread1, 128);
-static THD_FUNCTION(Thread1, arg) {
- (void)arg;
- chRegSetThreadName("blinker");
- while (true) {
- palWaitLineTimeout(SOFT_SERIAL_PIN, TIME_INFINITE);
- interrupt_handler(NULL);
- }
-}
-
-static SSTD_t *Transaction_table = NULL;
-static uint8_t Transaction_table_size = 0;
-
-void soft_serial_initiator_init(SSTD_t *sstd_table, int sstd_table_size) {
- Transaction_table = sstd_table;
- Transaction_table_size = (uint8_t)sstd_table_size;
-
- serial_output();
- serial_high();
-}
-
-void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size) {
- Transaction_table = sstd_table;
- Transaction_table_size = (uint8_t)sstd_table_size;
-
- serial_input();
-
- palEnablePadEvent(PAL_PORT(SOFT_SERIAL_PIN), PAL_PAD(SOFT_SERIAL_PIN), PAL_EVENT_MODE_FALLING_EDGE);
- chThdCreateStatic(waThread1, sizeof(waThread1), HIGHPRIO, Thread1, NULL);
-}
-
-// Used by the master to synchronize timing with the slave.
-static void __attribute__((noinline)) sync_recv(void) {
- serial_input();
- // 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()) {
- }
-
- serial_delay();
-}
-
-// Used by the slave to send a synchronization signal to the master.
-static void __attribute__((noinline)) sync_send(void) {
- serial_output();
-
- serial_low();
- serial_delay();
-
- serial_high();
-}
-
-// Reads a byte from the serial line
-static uint8_t __attribute__((noinline)) serial_read_byte(void) {
- uint8_t byte = 0;
- serial_input();
- for (uint8_t i = 0; i < 8; ++i) {
- byte = (byte << 1) | serial_read_pin();
- serial_delay();
- }
-
- return byte;
-}
-
-// Sends a byte with MSB ordering
-static void __attribute__((noinline)) serial_write_byte(uint8_t data) {
- uint8_t b = 8;
- serial_output();
- while (b--) {
- if (data & (1 << b)) {
- serial_high();
- } else {
- serial_low();
- }
- serial_delay();
- }
-}
-
-// interrupt handle to be used by the slave device
-void interrupt_handler(void *arg) {
- chSysLockFromISR();
-
- sync_send();
-
- // read mid pulses
- serial_delay_blip();
-
- uint8_t checksum_computed = 0;
- int sstd_index = 0;
-
-#ifdef SERIAL_USE_MULTI_TRANSACTION
- sstd_index = serial_read_byte();
- sync_send();
-#endif
-
- SSTD_t *trans = &Transaction_table[sstd_index];
- for (int i = 0; i < trans->initiator2target_buffer_size; ++i) {
- trans->initiator2target_buffer[i] = serial_read_byte();
- sync_send();
- checksum_computed += trans->initiator2target_buffer[i];
- }
- checksum_computed ^= 7;
- uint8_t checksum_received = serial_read_byte();
- sync_send();
-
- // wait for the sync to finish sending
- serial_delay();
-
- uint8_t checksum = 0;
- for (int i = 0; i < trans->target2initiator_buffer_size; ++i) {
- serial_write_byte(trans->target2initiator_buffer[i]);
- sync_send();
- serial_delay_half();
- checksum += trans->target2initiator_buffer[i];
- }
- serial_write_byte(checksum ^ 7);
- sync_send();
-
- // wait for the sync to finish sending
- serial_delay();
-
- *trans->status = (checksum_computed == checksum_received) ? TRANSACTION_ACCEPTED : TRANSACTION_DATA_ERROR;
-
- // end transaction
- serial_input();
-
- // TODO: remove extra delay between transactions
- serial_delay();
-
- chSysUnlockFromISR();
-}
-
-/////////
-// start transaction by initiator
-//
-// int soft_serial_transaction(int sstd_index)
-//
-// Returns:
-// TRANSACTION_END
-// TRANSACTION_NO_RESPONSE
-// TRANSACTION_DATA_ERROR
-// this code is very time dependent, so we need to disable interrupts
-#ifndef SERIAL_USE_MULTI_TRANSACTION
-int soft_serial_transaction(void) {
- int sstd_index = 0;
-#else
-int soft_serial_transaction(int sstd_index) {
-#endif
-
- if (sstd_index > Transaction_table_size) return TRANSACTION_TYPE_ERROR;
- SSTD_t *trans = &Transaction_table[sstd_index];
-
- // TODO: remove extra delay between transactions
- serial_delay();
-
- // this code is very time dependent, so we need to disable interrupts
- chSysLock();
-
- // signal to the slave that we want to start a transaction
- serial_output();
- serial_low();
- serial_delay_blip();
-
- // wait for the slaves response
- serial_input();
- serial_high();
- serial_delay();
-
- // check if the slave is present
- if (serial_read_pin()) {
- // slave failed to pull the line low, assume not present
- dprintf("serial::NO_RESPONSE\n");
- chSysUnlock();
- return TRANSACTION_NO_RESPONSE;
- }
-
- // if the slave is present syncronize with it
-
- uint8_t checksum = 0;
- // send data to the slave
-#ifdef SERIAL_USE_MULTI_TRANSACTION
- serial_write_byte(sstd_index); // first chunk is transaction id
- sync_recv();
-#endif
- for (int i = 0; i < trans->initiator2target_buffer_size; ++i) {
- serial_write_byte(trans->initiator2target_buffer[i]);
- sync_recv();
- checksum += trans->initiator2target_buffer[i];
- }
- serial_write_byte(checksum ^ 7);
- sync_recv();
-
- serial_delay();
- serial_delay(); // read mid pulses
-
- // receive data from the slave
- uint8_t checksum_computed = 0;
- for (int i = 0; i < trans->target2initiator_buffer_size; ++i) {
- trans->target2initiator_buffer[i] = serial_read_byte();
- sync_recv();
- checksum_computed += trans->target2initiator_buffer[i];
- }
- checksum_computed ^= 7;
- uint8_t checksum_received = serial_read_byte();
-
- sync_recv();
- serial_delay();
-
- if ((checksum_computed) != (checksum_received)) {
- dprintf("serial::FAIL[%u,%u,%u]\n", checksum_computed, checksum_received, sstd_index);
- serial_output();
- serial_high();
-
- chSysUnlock();
- return TRANSACTION_DATA_ERROR;
- }
-
- // always, release the line when not in use
- serial_high();
- serial_output();
-
- chSysUnlock();
- return TRANSACTION_END;
-}
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