Merge pull request #75 from canokeys/feature/fm11nt

fix fm11nt initialization
canokeys · Dec 16, 2023 · 4db715b · 4db715b
2 parents 7c90969 + 31c1410
commit 4db715b
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Showing 3 changed files with 16 additions and 10 deletions.
diff --git a/include/device.h b/include/device.h
@@ -66,7 +66,7 @@ void fm_csn_low(void);
  */
 void fm_csn_high(void);
 #if NFC_CHIP == NFC_CHIP_FM11NC
-void spi_transmit(uint8_t *buf, uint8_t len);
+void spi_transmit(const uint8_t *buf, uint8_t len);
 void spi_receive(uint8_t *buf, uint8_t len);
 #elif NFC_CHIP == NFC_CHIP_FM11NT
 void i2c_start(void);

diff --git a/include/nfc.h b/include/nfc.h
@@ -27,6 +27,9 @@
 #define FM_REG_NFC_CFG       0xD
 #define FM_REG_REGU_CFG      0xE
 
+#define FM_EEPROM_ATQA       0x03A0
+#define FM_EEPROM_ATS        0x03B0
+
 #define RF_STATE_MASK 0xE0
 
 #elif NFC_CHIP == NFC_CHIP_FM11NT
@@ -56,6 +59,7 @@
 #define FM_EEPROM_USER_CFG0  0x0390
 #define FM_EEPROM_USER_CFG1  0x0391
 #define FM_EEPROM_USER_CFG2  0x0392
+#define FM_EEPROM_ATS        0x03B0
 #define FM_EEPROM_ATQA       0x03BC
 #define FM_EEPROM_CRC8       0x03BB
 

diff --git a/interfaces/NFC/fm.c b/interfaces/NFC/fm.c
@@ -121,23 +121,25 @@ void fm_write_fifo(uint8_t *buf, uint8_t len) {
 void fm11_init(void) {
 #if NFC_CHIP == NFC_CHIP_FM11NC
   uint8_t buf[7];
-  uint8_t data1[] = {0x44, 0x00, 0x04, 0x20};
-  uint8_t data2[] = {0x05, 0x72, 0x02, 0x00, 0xB3, 0x99, 0x00};
+  uint8_t atqa_sak[] = {0x44, 0x00, 0x04, 0x20};
+  uint8_t ats[] = {0x05, 0x72, 0x02, 0x00, 0xB3, 0x99, 0x00};
   do {
-    fm_write_eeprom(0x3A0, data1, sizeof(data1));
-    fm_read_eeprom(0x3A0, buf, sizeof(data1));
-  } while (memcmp(data1, buf, sizeof(data1)) != 0);
+    fm_write_eeprom(FM_EEPROM_ATQA, atqa_sak, sizeof(atqa_sak));
+    fm_read_eeprom(FM_EEPROM_ATQA, buf, sizeof(atqa_sak));
+  } while (memcmp(atqa_sak, buf, sizeof(atqa_sak)) != 0);
   do {
-    fm_write_eeprom(0x3B0, data2, sizeof(data2));
-    fm_read_eeprom(0x3B0, buf, sizeof(data2));
-  } while (memcmp(data2, buf, sizeof(data2)) != 0);
+    fm_write_eeprom(FM_EEPROM_ATS, ats, sizeof(ats));
+    fm_read_eeprom(FM_EEPROM_ATS, buf, sizeof(ats));
+  } while (memcmp(ats, buf, sizeof(ats)) != 0);
 #elif NFC_CHIP == NFC_CHIP_FM11NT
   uint8_t crc_buffer[13];
   const uint8_t user_cfg[] = {0x91, 0x82, 0x21, 0xCD};
   const uint8_t atqa_sak[] = {0x44, 0x00, 0x04, 0x20};
+  const uint8_t ats[] = {0x05, 0x72, 0x80, 0x57, 0x00, 0x99, 0x00};
   fm_csn_low();
-  device_delay_us(200);
+  device_delay_us(500);
   fm_write_eeprom(FM_EEPROM_USER_CFG0, user_cfg, sizeof(user_cfg));
+  fm_write_eeprom(FM_EEPROM_ATS, ats, sizeof(ats));
   fm_write_eeprom(FM_EEPROM_ATQA, atqa_sak, sizeof(atqa_sak));
   fm_read_eeprom(FM_EEPROM_SN, crc_buffer, 9);
   DBG_MSG("SN: "); PRINT_HEX(crc_buffer, 9);