This commit is contained in:
Steven Dan
2026-05-12 11:17:20 +08:00
parent b5b095efd0
commit b43581c2ff
473 changed files with 55278 additions and 0 deletions

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// Copyright 2015-2021 XMOS LIMITED.
// This Software is subject to the terms of the XMOS Public Licence: Version 1.
#include <gpio.h>
#include <xs1.h>
#include <syscall.h>
#include "debug_print.h"
#define NUM_CLIENTS (4)
#define TIMESTAMP_TEST_DELAY_MICROSECONDS (5)
#define TIMESTAMP_TEST_DELAY_CLOCKS (TIMESTAMP_TEST_DELAY_MICROSECONDS * XS1_TIMER_MHZ)
#define TIMESTAMP_TEST_DELAY_SLACK_CLOCKS (100)
port output_port = XS1_PORT_4D;
port trigger_port = XS1_PORT_4B;
void wait_for_termination_signal() {
debug_printf("xCORE waiting for termination signal\n");
select {
case trigger_port when pinsneq(0) :> int _:
_exit(0);
break;
}
}
void drive_port(client output_gpio_if output_port, unsigned int client_num) {
unsigned int expected_pin_data = (client_num & 1);
if (SUPPLY_PIN_MAP) {
expected_pin_data = !expected_pin_data;
}
if (TIMESTAMPS) {
gpio_time_t ts1, ts2;
debug_printf("xCORE client %d driving port\n", client_num);
ts1 = output_port.output_and_timestamp(expected_pin_data);
// Wait known time before second input with timestamp
delay_microseconds(TIMESTAMP_TEST_DELAY_MICROSECONDS);
ts2 = output_port.output_and_timestamp(expected_pin_data);
// Check that the second ts is a later time than the first
if (porttimeafter(ts1, ts2)) {
debug_printf("ERROR: Second timestamp (%d) received by client %d appears to be earlier than first (%d)\n",
ts2, client_num, ts1);
}
// Sanity check difference between timestamps
if ((ts2 - ts1) <
(TIMESTAMP_TEST_DELAY_CLOCKS - TIMESTAMP_TEST_DELAY_SLACK_CLOCKS)) {
debug_printf("ERROR: Difference between timestamps (%d, %d) received by client %d smaller than expected\n",
ts1, ts2, client_num);
}
if ((ts2 - ts1) >
(TIMESTAMP_TEST_DELAY_CLOCKS + TIMESTAMP_TEST_DELAY_SLACK_CLOCKS)) {
debug_printf("ERROR: Difference between timestamps (%d, %d) received by client %d larger than expected\n",
ts1, ts2, client_num);
}
} else {
debug_printf("xCORE client %d driving port\n", client_num);
output_port.output(expected_pin_data);
}
}
int main(void) {
interface output_gpio_if i_output_port[NUM_CLIENTS];
#if SUPPLY_PIN_MAP
char pin_map[NUM_CLIENTS] = {1, 0, 3, 2};
#else
#define pin_map null
#endif
par {
output_gpio(i_output_port, NUM_CLIENTS, output_port, pin_map);
par (int i = 0; i < NUM_CLIENTS; i++) {
drive_port(i_output_port[i], i);
}
wait_for_termination_signal();
}
return 0;
}