NFC PN532 is image below
putting switch to 1 and 0 is i2c, putting to 0 0 is for HSU, just for information
Code :
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/**************************************************************************/
/*!
@file mifareclassic_memdump.pde
@author Adafruit Industries
@license BSD (see license.txt)
This example attempts to dump the contents of a Mifare Classic 1K card
Note that you need the baud rate to be 115200 because we need to print
out the data and read from the card at the same time!
This is an example sketch for the Adafruit PN532 NFC/RFID breakout boards
This library works with the Adafruit NFC breakout
----> https://www.adafruit.com/products/364
Check out the links above for our tutorials and wiring diagrams
These chips use SPI or I2C to communicate
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
*/
/**************************************************************************/
#include <Adafruit_PN532.h>
#include "term_func.h"
// If using the breakout with SPI, define the pins for SPI communication.
#define PN532_SCK (2)
#define PN532_MOSI (3)
#define PN532_SS (4)
#define PN532_MISO (5)
// 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 (7) // For esp32-p4 7,8
#define PN532_RESET (8) // 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);
//static const int RXPin = 36, TXPin = 2;
//HardwareSerial ss(2);
// Or use hardware Serial:
//Adafruit_PN532 nfc(PN532_RESET, &ss);
void setup(void) {
// has to be fast to dump the entire memory contents!
Serial.begin(115200);
//ss.begin(115200, SERIAL_8N1, RXPin, TXPin);
term_init();
nfc.begin();
term_write("Looking for PN532...\r\n");
uint32_t versiondata = nfc.getFirmwareVersion();
if (! versiondata) {
term_write("Didn't find PN53x board\r\n");
while (1); // halt
}
// Got ok data, print it out!
term_write("Found chip PN5 "); term_printf("%d", (versiondata>>24) & 0xFF);
term_write("Firmware ver. "); term_printf("%d", (versiondata>>16) & 0xFF);
term_write("."); term_printf("%d\r\n", (versiondata>>8) & 0xFF);
nfc.SAMConfig();
term_println("Waiting for an ISO14443A Card ...");
}
void loop(void) {
uint8_t 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, &uidLength);
if (success) {
// Display some basic information about the card
term_println("Found an ISO14443A card");
term_write(" UID Length: ");term_printf("%d", uidLength);term_println(" bytes");
term_write(" UID Value: ");
term_PrintHex(uid, uidLength);
term_println("");
if (uidLength == 4)
{
// We probably have a Mifare Classic card ...
term_println("Seems to be a Mifare Classic card (4 byte UID)");
// Now we need to try to authenticate it for read/write access
// Try with the factory default KeyA: 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF
term_println("Trying to authenticate block 4 with default KEYA value");
uint8_t keya[6] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
// Start with block 4 (the first block of sector 1) since sector 0
// contains the manufacturer data and it's probably better just
// to leave it alone unless you know what you're doing
success = nfc.mifareclassic_AuthenticateBlock(uid, uidLength, 4, 0, keya);
if (success)
{
term_println("Sector 1 (Blocks 4..7) has been authenticated");
uint8_t data[16];
// If you want to write something to block 4 to test with, uncomment
// the following line and this text should be read back in a minute
//memcpy(data, (const uint8_t[]){ 'a', 'd', 'a', 'f', 'r', 'u', 'i', 't', '.', 'c', 'o', 'm', 0, 0, 0, 0 }, sizeof data);
// success = nfc.mifareclassic_WriteDataBlock (4, data);
// Try to read the contents of block 4
success = nfc.mifareclassic_ReadDataBlock(4, data);
if (success)
{
// Data seems to have been read ... spit it out
term_println("Reading Block 4:");
term_PrintHexChar(data, 16);
term_println("");
// Wait a bit before reading the card again
delay(1000);
}
else
{
term_println("Ooops ... unable to read the requested block. Try another key?");
}
}
else
{
term_println("Ooops ... authentication failed: Try another key?");
}
}
if (uidLength == 7)
{
// We probably have a Mifare Ultralight card ...
term_println("Seems to be a Mifare Ultralight tag (7 byte UID)");
// Try to read the first general-purpose user page (#4)
term_println("Reading page 4");
uint8_t data[32];
success = nfc.mifareultralight_ReadPage (4, data);
if (success)
{
// Data seems to have been read ... spit it out
term_PrintHexChar(data, 4);
term_println("");
// Wait a bit before reading the card again
delay(1000);
}
else
{
term_println("Ooops ... unable to read the requested page!?");
}
}
}
}
Code for init display: on term_init:
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#include "term_func.h"
#include "displays_config.h"
Arduino_ESP32DSIPanel *dsipanel = new Arduino_ESP32DSIPanel(
display_cfg.hsync_pulse_width,
display_cfg.hsync_back_porch,
display_cfg.hsync_front_porch,
display_cfg.vsync_pulse_width,
display_cfg.vsync_back_porch,
display_cfg.vsync_front_porch,
display_cfg.prefer_speed,
display_cfg.lane_bit_rate);
Arduino_DSI_Display *gfx = new Arduino_DSI_Display(
display_cfg.width,
display_cfg.height,
dsipanel,
0,
true,
-1,
display_cfg.init_cmds,
display_cfg.init_cmds_size);
void term_init()
{
DEV_I2C_Port port = DEV_I2C_Init();
display_init(port);
set_display_backlight(port, 127);
// Init Display
if (!gfx->begin()) {
term_write("gfx->begin() failed!");
}
gfx->fillScreen(RGB565_BLACK);
gfx->setCursor(0, 1);
// Rotation to 90°
gfx->setRotation(1);
gfx->setFont(&CONSOLE_FONT);
gfx->setTextSize(1);
}