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Travel_safety/src/EspSoftwareSerial/examples/bitpattern/bitpattern.ino

72 lines
1.4 KiB

#include "SoftwareSerial.h"
#ifndef D5
#if defined(ESP8266)
#define D8 (15)
#define D5 (14)
#define D7 (13)
#define D6 (12)
#define RX (3)
#define TX (1)
#elif defined(ESP32)
#define D8 (5)
#define D5 (18)
#define D7 (23)
#define D6 (19)
#define RX (3)
#define TX (1)
#endif
#endif
EspSoftwareSerial::UART swSer;
#ifdef ESP8266
auto logSer = EspSoftwareSerial::UART(-1, TX);
auto hwSer = Serial;
#else
auto logSer = Serial;
auto hwSer = Serial1;
#endif
constexpr uint32_t TESTBPS = 115200;
void setup() {
delay(2000);
#ifdef ESP8266
hwSer.begin(TESTBPS, ::SERIAL_8N1);
hwSer.swap();
#else
hwSer.begin(TESTBPS, ::SERIAL_8N1, D6, D5);
#endif
logSer.begin(115200);
logSer.println(PSTR("\nOne Wire Half Duplex Bitpattern and Datarate Test"));
swSer.begin(TESTBPS, EspSoftwareSerial::SWSERIAL_8N1, D6, D5);
swSer.enableIntTx(true);
logSer.println(PSTR("Tx on swSer"));
}
uint8_t val = 0xff;
void loop() {
swSer.write((uint8_t)0x00);
swSer.write(val);
swSer.write(val);
auto start = ESP.getCycleCount();
int rxCnt = 0;
while (ESP.getCycleCount() - start < ESP.getCpuFreqMHz() * 1000000 / 10) {
if (hwSer.available()) {
auto rxVal = hwSer.read();
if ((!rxCnt && rxVal) || (rxCnt && rxVal != val)) {
logSer.printf(PSTR("Rx bit error: tx = 0x%02x, rx = 0x%02x\n"), val, rxVal);
}
++rxCnt;
}
}
if (rxCnt != 3) {
logSer.printf(PSTR("Rx cnt error, tx = 0x%02x\n"), val);
}
++val;
if (!val) {
logSer.println("Starting over");
}
}