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임피던스 버스에서 ILI9341 디스플레이 320 * 240 및 PN532 RFID 리더를 사용하여 ESP12-E 모듈과 인터페이스하려고합니다. SS 핀을 다른 GPIO에 할당했습니다.다중 슬레이브 SPI on ESP8266 - PN532 및 ILI9341
Im는 둘 다 통신 할 수 없습니다. 디스플레이는 어떤 조건에서도 완벽하게 작동합니다. 그러나 ILI9341과 통신하면 PN532는 작동을 멈추고 다시 초기화하더라도 장치를 다시 시작할 때까지 응답하지 않습니다.
어떤 도움은 매우 내 코드 주시면 감사하겠습니다 :
#include <Wire.h>
#include <SPI.h>
#include <Adafruit_PN532.h>
#include <UTFT.h>
UTFT lcd(ILI9341_S5P,15,D1,D3);
// If using the breakout with SPI, define the pins for SPI communication.
#define PN532_SS (D4)
#define PN532_SCK (D5)
#define PN532_MOSI (D7)
#define PN532_MISO (D6)
// If using the breakout or shield with I2C, define just the pins connected
// to the IRQ and reset lines. Use the values below (2, 3) for the shield!
#define PN532_IRQ (2)
#define PN532_RESET (3) // Not connected by default on the NFC Shield
// Uncomment just _one_ line below depending on how your breakout or shield
// is connected to the Arduino:
// Use this line for a breakout with a SPI connection:
Adafruit_PN532 nfc(PN532_SCK, PN532_MISO, PN532_MOSI, PN532_SS);
// Use this line for a breakout with a hardware SPI connection. Note that
// the PN532 SCK, MOSI, and MISO pins need to be connected to the Arduino's
// hardware SPI SCK, MOSI, and MISO pins. On an Arduino Uno these are
// SCK = 13, MOSI = 11, MISO = 12. The SS line can be any digital IO pin.
//Adafruit_PN532 nfc(PN532_SS);
// Or use this line for a breakout or shield with an I2C connection:
//Adafruit_PN532 nfc(PN532_IRQ, PN532_RESET);
extern uint8_t BigFont[];
void setup(void) {
Serial.begin(115200);
Serial.println("Hello!");
nfc.begin();
uint32_t versiondata = nfc.getFirmwareVersion();
if (! versiondata) {
Serial.print("Didn't find PN53x board");
while (1); // halt
}
// Got ok data, print it out!
Serial.print("Found chip PN5"); Serial.println((versiondata>>24) & 0xFF, HEX);
Serial.print("Firmware ver. "); Serial.print((versiondata>>16) & 0xFF, DEC);
Serial.print('.'); Serial.println((versiondata>>8) & 0xFF, DEC);
lcd.InitLCD();
lcd.setColor (0, 0, 0);
lcd.fillRect(1,1,319,239);
lcd.setColor (255, 255, 255);
lcd.fillRect(100,100,220,140);
lcd.setFont (BigFont);
lcd.print(String("Scanning"),0,0);
// Set the max number of retry attempts to read from a card
// This prevents us from waiting forever for a card, which is
// the default behaviour of the PN532.
nfc.setPassiveActivationRetries(0xFF);
// configure board to read RFID tags
nfc.SAMConfig();
Serial.println("Waiting for an ISO14443A card");
}
void loop(void) {
boolean success;
uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 }; // Buffer to store the returned UID
uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
// Wait for an ISO14443A type cards (Mifare, etc.). When one is found
// 'uid' will be populated with the UID, and uidLength will indicate
// if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength,25);
if (success) {
Serial.println("Found a card!");
Serial.print("UID Length: ");Serial.print(uidLength, DEC);Serial.println(" bytes");
Serial.print("UID Value: ");
for (uint8_t i=0; i < uidLength; i++)
{
Serial.print(" 0x");Serial.print(uid[i], HEX);
}
Serial.println("");
// Wait 1 second before continuing
delay(1000);
}
else
{
// PN532 probably timed out waiting for a card
//Serial.println("Timed out waiting for a card");
}
}