YACWC

2026-08-31 22:43:51 -04:00
commit c87308caca
521 changed files with 141326 additions and 0 deletions
@@ -0,0 +1,87 @@
+#include "st25dv.h"
+
+identifier_results get_nugget_data()
+{
+    NDEF_MSG = rfid_read_first_ndef_entry();
+    TRIMMED_STRING = remove_spaces(NDEF_MSG.payload, NDEF_MSG.payload_len);
+    char* delim_ptr = strchr(TRIMMED_STRING.str, ',');
+    if (delim_ptr != NULL) {
+        uint8_t index_comma = delim_ptr - TRIMMED_STRING.str;
+        memcpy(IDENTIFIER.name_str, TRIMMED_STRING.str, index_comma);
+        memcpy(
+            IDENTIFIER.diameter_str, TRIMMED_STRING.str + index_comma + 1, TRIMMED_STRING.length);
+        IDENTIFIER.name_len = index_comma;
+        IDENTIFIER.diameter_len = TRIMMED_STRING.length - index_comma;
+    } else {
+        memcpy(IDENTIFIER.name_str, TRIMMED_STRING.str, TRIMMED_STRING.length);
+        IDENTIFIER.name_len = TRIMMED_STRING.length;
+        memcpy(IDENTIFIER.diameter_str, "N/A", 3);
+        IDENTIFIER.diameter_len = 3;
+    }
+
+    IDENTIFIER.hashed = hash(IDENTIFIER.name_str, 0, 59);
+
+    return IDENTIFIER;
+}
+
+trimmed_string_struct remove_spaces(char* str, uint8_t len_str)
+{
+    uint8_t i = 0, j = 0;
+    memset(TRIMMED_STRING.str, ' ', 20);
+    while (str[i]) {
+        if (str[i] != ' ') {
+            TRIMMED_STRING.str[j++] = str[i];
+        }
+        i++;
+        if (i >= len_str) {
+            break;
+        }
+    }
+
+    TRIMMED_STRING.length = j;
+    return TRIMMED_STRING;
+}
+
+void rfid_set_low_power_down(bool state)
+{
+    SET_PIN_OUT(DDRD, DDD5);
+    if (state) {
+        SET_PIN_HIGH(PORTD, PD5);
+    } else {
+        SET_PIN_LOW(PORTD, PD5);
+    }
+}
+
+ndef_message rfid_read_first_ndef_entry()
+{
+    rfid_set_low_power_down(false);
+    rfid_set_i2c_power(true);
+    _delay_ms(10);
+    memset(DATA_BUFFER_254, 0, 254);
+    rfid_read_memory(DATA_BUFFER_254, 254, 0x0000 + 4);
+    NDEF_MSG = readNDEFText(DATA_BUFFER_254);
+    rfid_set_low_power_down(true);
+    rfid_set_i2c_power(false);
+    return NDEF_MSG;
+}
+
+uint8_t rfid_read_system_register()
+{
+    return read_one_byte_16bit_addr_no_err_register(I2C_SYSTEM_ADDR, 0x0000);
+}
+
+void rfid_set_i2c_power(bool state)
+{
+
+    SET_PIN_OUT(DDRE, DDE0);
+    if (state) {
+        SET_PIN_HIGH(PORTE, PE0);
+    } else {
+        SET_PIN_LOW(PORTE, PE0);
+    }
+}
+
+uint8_t rfid_read_memory(uint8_t* data, uint8_t num_bytes, uint16_t address)
+{
+    return read_n_bytes_16bit_addr(I2C_USER_ADDR, address, data, num_bytes);
+}