EM4x70 write support

include/em4x70.h

@@ -11,8 +11,14 @@
 #ifndef EM4X70_H__
 #define EM4X70_H__
 
+#define EM4X70_NUM_BLOCKS 16
+
 typedef struct {
     bool parity;
+
+    // Used for writing address
+    uint8_t address;
+    uint16_t word;
 } em4x70_data_t;
 
 #endif /* EM4X70_H__ */

include/pm3_cmd.h

@@ -517,6 +517,7 @@ typedef struct {
 #define CMD_LF_EM4X50_ESET                                                0x0252
 #define CMD_LF_EM4X50_CHK                                                 0x0253
 #define CMD_LF_EM4X70_INFO                                                0x0260
+#define CMD_LF_EM4X70_WRITE                                               0x0261
 // Sampling configuration for LF reader/sniffer
 #define CMD_LF_SAMPLING_SET_CONFIG                                        0x021D
 #define CMD_LF_FSK_SIMULATE                                               0x021E