FreeCalypso > hg > fc-small-hw

annotate mmtb1/schem+bom/vsrc/led_circuit.v @ 13:c016671a4b4a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
lunakpd1 project started
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 09 May 2020 00:38:07 +0000
parents 0f9bdd60ce50
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module captures the circuit for showing the state of a digital signal
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * on a LED without loading that digital signal by driving the LED from VBAT
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * and using a MOSFET to control it.
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 */
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 module led_circuit (GND, VBAT, Signal);
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 input GND, VBAT, Signal;
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 wire R_to_LED, LED_to_Q;
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 resistor R (VBAT, R_to_LED);
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 diode led (.A(R_to_LED), .C(LED_to_Q));
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 mosfet Q (.G(Signal), .S(GND), .D(LED_to_Q));
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16
0f9bdd60ce50 fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 endmodule