ADC_MODE_PRESCALE(63) |
ADC_MODE_STARTUP_TIME(1) |
ADC_MODE_SAMPLE_HOLD_TIME(15);
- AT91C_BASE_ADC->ADC_CHER = ADC_CHANNEL(ADC_CHAN_HF);
+ AT91C_BASE_ADC->ADC_CHER = ADC_CHANNEL(ADC_CHAN_HF_LOW);
// start ADC
AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START;
if (BUTTON_PRESS()) return 1;
// test if the field exists
- if (AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ADC_CHAN_HF)) {
+ if (AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ADC_CHAN_HF_LOW)) {
analogCnt++;
- analogAVG += AT91C_BASE_ADC->ADC_CDR[ADC_CHAN_HF];
+ analogAVG += AT91C_BASE_ADC->ADC_CDR[ADC_CHAN_HF_LOW];
AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START;
if (analogCnt >= 32) {
- if ((MAX_ADC_HF_VOLTAGE * (analogAVG / analogCnt) >> 10) < MF_MINFIELDV) {
+ if ((MAX_ADC_HF_VOLTAGE_LOW * (analogAVG / analogCnt) >> 10) < MF_MINFIELDV) {
vtime = GetTickCount();
if (!timer) timer = vtime;
// 50ms no field --> card to idle state
b5,b6 = 00 - DESELECT
11 - WTX
*/
-int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data) {
+int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data, uint8_t *res) {
uint8_t parity[MAX_PARITY_SIZE];
uint8_t real_cmd[cmd_len + 4];
- // ISO 14443 APDU frame: PCB [CID] [NAD] APDU CRC PCB=0x02
- real_cmd[0] = 0x02; // bnr,nad,cid,chn=0; i-block(0x00)
- // put block number into the PCB
- real_cmd[0] |= iso14_pcb_blocknum;
- memcpy(real_cmd + 1, cmd, cmd_len);
+ if (cmd_len) {
+ // ISO 14443 APDU frame: PCB [CID] [NAD] APDU CRC PCB=0x02
+ real_cmd[0] = 0x02; // bnr,nad,cid,chn=0; i-block(0x00)
+ // put block number into the PCB
+ real_cmd[0] |= iso14_pcb_blocknum;
+ memcpy(real_cmd + 1, cmd, cmd_len);
+ } else {
+ // R-block. ACK
+ real_cmd[0] = 0xA2; // r-block + ACK
+ real_cmd[0] |= iso14_pcb_blocknum;
+ }
AppendCrc14443a(real_cmd, cmd_len + 1);
ReaderTransmit(real_cmd, cmd_len + 3, NULL);
{
iso14_pcb_blocknum ^= 1;
}
+
+ // if we received I-block with chaining we need to send ACK and receive another block of data
+ if (res)
+ *res = data_bytes[0];
// crc check
- if (len >=3 && !CheckCrc14443(CRC_14443_A, data_bytes, len)) {
+ if (len >= 3 && !CheckCrc14443(CRC_14443_A, data_bytes, len)) {
return -1;
}
}
if(param & ISO14A_APDU && !cantSELECT) {
- arg0 = iso14_apdu(cmd, len, buf);
+ uint8_t res;
+ arg0 = iso14_apdu(cmd, len, buf, &res);
LED_B_ON();
- cmd_send(CMD_ACK, arg0, 0, 0, buf, sizeof(buf));
+ cmd_send(CMD_ACK, arg0, res, 0, buf, sizeof(buf));
LED_B_OFF();
}