Moved C-Netz "Speicherkarte" to "extra" directory and improved it.

2020-05-10 19:33:27 +02:00
parent e18f7dbc1f
commit 0b6a5d19cb
11 changed files with 456 additions and 172 deletions
--- a/extra/simulator/simulator.ino
+++ b/extra/simulator/simulator.ino
@@ -0,0 +1,126 @@
+/* SIM card for ATMEL
+ *
+ * (C) 2020 by Andreas Eversberg <jolly@eversberg.eu>
+ * All Rights Reserved
+ *
+ * This program 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
+ * (at your option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if defined(__AVR_ATtiny85__)
+#define RST_PIN  2
+#define CLK_PIN  3
+#define DATA_PIN 4
+#error UNTESTED!
+#else
+#define CLK_PIN  5
+#define RST_PIN  6
+#define DATA_PIN 7
+#endif
+
+uint8_t card_data[] = {
+
+0xff, 0xf7, 0x5c, 0xff, 0xff, 0xff, 0xff, 0xff,
+0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x4b, 0x90,
+0x5f, 0x25, 0x07, 0x0c, 0x00, 0x00, 0xfe, 0xfd,
+0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00,
+
+};
+
+volatile uint8_t *rst_in, *clk_in, *data_in, *data_out, *data_mode;
+uint8_t rst_bit, clk_bit, data_bit;
+
+void setup()
+{
+  volatile uint8_t *out, *mode;
+  uint8_t port;
+
+  rst_bit = digitalPinToBitMask(RST_PIN);
+  port = digitalPinToPort(RST_PIN);
+  mode = portModeRegister(port);
+  out = portOutputRegister(port);
+  rst_in = portInputRegister(port);
+  *mode &= ~rst_bit; /* input */
+  *out |= rst_bit; /* pullup */
+
+  clk_bit = digitalPinToBitMask(CLK_PIN);
+  port = digitalPinToPort(CLK_PIN);
+  mode = portModeRegister(port);
+  out = portOutputRegister(port);
+  clk_in = portInputRegister(port);
+  *mode &= ~clk_bit; /* input */
+  *out |= clk_bit; /* pullup */
+
+  data_bit = digitalPinToBitMask(DATA_PIN);
+  port = digitalPinToPort(DATA_PIN);
+  data_mode = portModeRegister(port);
+  data_out = portOutputRegister(port);
+  data_in = portInputRegister(port);
+  *data_mode |= data_bit; /* output */
+}
+
+uint8_t byte_count;
+uint8_t bit_count;
+
+void loop()
+{
+reset:
+  byte_count = 0;
+  bit_count = 0;
+
+  /* wait for reset pulse */
+  while (!(*rst_in & rst_bit));
+  /* now we have reset, so we wait for clock pulse */
+  while (!(*clk_in & clk_bit)) {
+    /* if we lost reset, go to start */
+    if (!(*rst_in & rst_bit))
+      goto reset;
+  }
+  while ((*clk_in & clk_bit)) {
+    /* if we lost reset, go to start */
+    if (!(*rst_in & rst_bit))
+      goto reset;
+  }
+  while ((*rst_in & rst_bit));
+
+next_bit:
+  /* present bit */
+  if ((card_data[byte_count] >> bit_count) & 1)
+    *data_out |= data_bit; /* high */
+  else
+    *data_out &= ~data_bit; /* low */
+  if (++bit_count == 8) {
+    bit_count = 0;
+    if (++byte_count == sizeof(card_data)) {
+      goto reset;
+    }
+  }
+
+  /* wait for clock pulse */
+  while (!(*clk_in & clk_bit)) {
+    /* reset counter if reset was detected */
+    if ((*rst_in & rst_bit)) {
+      goto reset;
+    }
+  }
+  while ((*clk_in & clk_bit)) {
+    /* reset counter if reset was detected */
+    if ((*rst_in & rst_bit)) {
+      goto reset;
+    }
+  }
+  goto next_bit;
+}