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Diffstat (limited to 'usb-i2c-sl018/sl018.c')
-rw-r--r--usb-i2c-sl018/sl018.c242
1 files changed, 242 insertions, 0 deletions
diff --git a/usb-i2c-sl018/sl018.c b/usb-i2c-sl018/sl018.c
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+++ b/usb-i2c-sl018/sl018.c
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+/*
+ * spreadspace avr utils
+ *
+ *
+ * Copyright (C) 2013 Christian Pointner <equinox@spreadspace.org>
+ * Othmar Gsenger <otti@wirdorange.org>
+ *
+ * This file is part of spreadspace avr utils.
+ *
+ * spreadspace avr utils is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * spreadspace avr utils is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "sl018.h"
+#include "LUFA/Drivers/Peripheral/TWI.h"
+
+#define SL018_TWI_ADDR 0xA0
+#define SL018_TAG_STA_PIN PIND
+#define SL018_TAG_STA_BIT 7
+#define CARD_PRESENT (!((SL018_TAG_STA_PIN >> SL018_TAG_STA_BIT) & 1))
+#define MAX_UID_LEN 7
+
+
+const char* SL018_cmd_tostring(const uint8_t cmd)
+{
+ switch(cmd) {
+ case 0x01: return "Select Mifare card";
+ case 0x02: return "Login to a sector";
+ case 0x03: return "Read a data block";
+ case 0x04: return "Write a data block";
+ case 0x05: return "Read a value block";
+ case 0x06: return "Initialize a value block";
+ case 0x07: return "Write master key";
+ case 0x08: return "Increment value";
+ case 0x09: return "Decrement value";
+ case 0x0A: return "Copy value";
+ case 0x10: return "Read a data page";
+ case 0x11: return "Write a data page";
+ case 0x40: return "Control the red led";
+ case 0xF0: return "Get firmware version";
+ case 0xFF: return "Reset";
+ default: return "unknown";
+ }
+}
+
+const char* SL018_status_tostring(const uint8_t status)
+{
+ switch(status) {
+ case 0x0: return "Operation succeed";
+ case 0x1: return "No tag";
+ case 0x2: return "Login succeed";
+ case 0x3: return "Login fail";
+ case 0x4: return "Read fail";
+ case 0x5: return "Write fail";
+ case 0x6: return "Unable to read after write";
+ case 0xA: return "Collision occur";
+ case 0xC: return "Load key fail";
+ case 0xD: return "Not authenticate";
+ case 0xE: return "Not a value block";
+ default: return "unknown";
+ }
+}
+
+const char* SL018_tagtype_tostring(const uint8_t type)
+{
+ switch(type) {
+ case 0x1: return "Mifare 1k, 4 byte UID";
+ case 0x2: return "Mifare 1k, 7 byte UID";
+ case 0x3: return "Mifare Ultralight or NATG203, 7 byte UID";
+ case 0x4: return "Mifare 4k, 4 byte UID";
+ case 0x5: return "Mifare 4k, 7 byte UID";
+ case 0x6: return "Mifare DesFire, 7 byte UID";
+ default: return "unknown";
+ }
+}
+
+uint8_t SL018_tagtype_to_uidlen(const uint8_t type)
+{
+ switch(type) {
+ case 0x1:
+ case 0x4: return 4;
+ case 0x2:
+ case 0x3:
+ case 0x5:
+ case 0x6: return 7;
+ default: return 0;
+ }
+}
+
+const uint8_t SL018_CMD_ComSelectCard[] = {1,0x01};
+const uint8_t SL018_CMD_ComRedLedOn[] = {2,0x40,1};
+const uint8_t SL018_CMD_ComRedLedOff[] = {2,0x40,0};
+const uint8_t SL018_CMD_ComGetFirmwareVersion[] = {1,0xF0};
+const uint8_t SL018_CMD_ComReset[] = {1,0xFF};
+
+uint8_t twi_recv_buf[256];
+typedef struct __attribute__((__packed__))
+{
+ uint8_t len;
+ uint8_t command;
+ uint8_t status;
+ uint8_t data[sizeof(twi_recv_buf)-3];
+} sl018_message_t;
+
+sl018_message_t* twi_recv_msg = (sl018_message_t *)&twi_recv_buf;
+
+
+uint8_t sl018_cmd_raw(const uint8_t* twi_send_buf, bool wait_for_answer)
+{
+ uint8_t pos = 0;
+
+ if (TWI_StartTransmission(SL018_TWI_ADDR | TWI_ADDRESS_WRITE,10) == TWI_ERROR_NoError) {
+ for(pos=0; pos<=twi_send_buf[0]; pos++) {
+ if( ! TWI_SendByte(twi_send_buf[pos])) {
+ TWI_StopTransmission();
+ return 1;
+ }
+ }
+ TWI_StopTransmission();
+ } else
+ return 1;
+
+ if(!wait_for_answer) return 0;
+
+ memset(twi_recv_buf, 0, sizeof(twi_recv_buf));
+ _delay_ms(50);
+
+ if (TWI_StartTransmission(SL018_TWI_ADDR | TWI_ADDRESS_READ,10) == TWI_ERROR_NoError) {
+ TWI_ReceiveByte(twi_recv_buf, 0);
+ for(pos=1; pos<=twi_recv_buf[0]; pos++) {
+ if (! TWI_ReceiveByte(&twi_recv_buf[pos], (pos == twi_recv_buf[0]) ? 1:0 ) ) {
+ TWI_StopTransmission();
+ return 1;
+ }
+ }
+ TWI_StopTransmission();
+ } else
+ return 1;
+
+ return 0;
+}
+
+uint8_t sl018_reset(FILE * stdio)
+{
+ if(sl018_cmd_raw(SL018_CMD_ComReset, 0)) {
+ fprintf(stdio, "I2C error\n\r");
+ return 1;
+ }
+ return 0;
+}
+
+uint8_t sl018_cmd(const uint8_t* twi_send_buf, FILE * stdio)
+{
+ if(sl018_cmd_raw(twi_send_buf, 1)) {
+ fprintf(stdio, "I2C error\n\r");
+ return 1;
+ } else {
+ if(twi_recv_msg->len < 2) {
+ fprintf(stdio,"SL018 Cmd,Error: short message received\n\r");
+ return 1;
+ }
+ if(twi_recv_msg->status) {
+ fprintf(stdio,"SL018 Cmd,Error: '%s','%s'\n\r",SL018_cmd_tostring(twi_recv_msg->command),SL018_status_tostring(twi_recv_msg->status));
+ return 1;
+ }
+ sl018_message_t * twi_send_msg = (sl018_message_t *)twi_send_buf;
+ if(twi_send_msg->command != twi_recv_msg->command) {
+ fprintf(stdio,"SL018 Cmd,Error: mismatch of sent and received command code: %02X,%02X\n\r",twi_send_msg->command,twi_recv_msg->command);
+ }
+ }
+ return 0;
+}
+
+void sl018_read_card_uid(uid_t * uid, FILE * stdio)
+{
+ uid->length=0;
+ uid->buffer=NULL;
+ fprintf(stdio, "CARD IN: ");
+ if(!sl018_cmd(SL018_CMD_ComSelectCard,stdio))
+ {
+ uint8_t uid_len = twi_recv_msg->len - sizeof(twi_recv_msg->command) - sizeof(twi_recv_msg->status) - 1;
+ if(uid_len == 255 || uid_len > MAX_UID_LEN) {
+ fprintf(stdio," received UID length (%d) is to big for keystore \n\r", uid_len);
+ return;
+ }
+ uint8_t type = twi_recv_msg->data[uid_len];
+ uint8_t expected_uid_len = SL018_tagtype_to_uidlen(type);
+ if(expected_uid_len != uid_len) {
+ fprintf(stdio," Invalid uid length (%d) for tag type: %s\n\r", uid_len, SL018_tagtype_tostring(type));
+ return;
+ }
+
+ for (uint8_t pos=0; pos<uid_len; pos++)
+ fprintf(stdio,"%02X",twi_recv_msg->data[uid_len-pos-1]);
+ fprintf(stdio, ", %s\n\r", SL018_tagtype_tostring(type));
+
+ if (0 < type && type < 7) {
+ uid->length= uid_len;
+ uid->buffer=twi_recv_msg->data;
+ } else {
+ fprintf(stdio,"Ignoring unknown card type %02x\n\r",type);
+ }
+ }
+}
+
+void sl018_set_led(uint8_t on,FILE * stdio)
+{
+ if(on)
+ sl018_cmd(SL018_CMD_ComRedLedOn,stdio);
+ else
+ sl018_cmd(SL018_CMD_ComRedLedOff,stdio);
+}
+
+uint8_t sl018_check_for_new_card(FILE * stdio)
+{
+ static uint8_t card_status = 0;
+ if(CARD_PRESENT != card_status) {
+ card_status = CARD_PRESENT;
+ if(card_status)
+ return 1;
+ }
+ return 0;
+}
+
+unsigned char * sl018_get_firmware_version(FILE * stdio)
+{
+ if(!sl018_cmd(SL018_CMD_ComGetFirmwareVersion,stdio)) {
+ twi_recv_msg->data[sizeof(twi_recv_msg->data) - 1] = 0;
+ return twi_recv_msg->data;
+ } else {
+ return NULL;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-05 07:34:15 +0000