simtrace2-remsim: Send an ATR that allows for a 5MHz/16 divider
This ATR is useful to test higher speeds up to 312500 bits/s
diff --git a/host/simtrace2-remsim.c b/host/simtrace2-remsim.c
index 1fd2fa7..b96d481 100644
--- a/host/simtrace2-remsim.c
+++ b/host/simtrace2-remsim.c
@@ -179,6 +179,33 @@
return tx_to_dev((uint8_t *)txd, sizeof(*txd)+txd->data_len);
}
+static void atr_update_csum(uint8_t *atr, unsigned int atr_len)
+{
+ uint8_t csum = 0;
+ int i;
+
+ for (i = 1; i < atr_len - 1; i++)
+ csum = csum ^ atr[i];
+
+ atr[atr_len-1] = csum;
+}
+
+static int request_set_atr(const uint8_t *atr, unsigned int atr_len)
+{
+ struct cardemu_usb_msg_set_atr *satr;
+ uint8_t buf[sizeof(*satr) + atr_len];
+ satr = (struct cardemu_usb_msg_set_atr *) buf;
+
+ printf("<= request_set_atr(%s)\n", osmo_hexdump(atr, atr_len));
+
+ memset(satr, 0, sizeof(*satr));
+ satr->hdr.msg_type = CEMU_USB_MSGT_DT_SET_ATR;
+ satr->atr_len = atr_len;
+ memcpy(satr->atr, atr, atr_len);
+
+ return tx_to_dev((uint8_t *)satr, sizeof(buf));
+}
+
/*! \brief Process a STATUS message from the SIMtrace2 */
static int process_do_status(uint8_t *buf, int len)
{
@@ -468,6 +495,11 @@
}
request_card_insert(true);
+ uint8_t real_atr[] = { 0x3B, 0x9F, 0x96, 0x80, 0x1F, 0xC7, 0x80, 0x31,
+ 0xA0, 0x73, 0xBE, 0x21, 0x13, 0x67, 0x43, 0x20,
+ 0x07, 0x18, 0x00, 0x00, 0x01, 0xA5 };
+ atr_update_csum(real_atr, sizeof(real_atr));
+ request_set_atr(real_atr, sizeof(real_atr));
run_mainloop();
ret = 0;