FreeCalypso > hg > freecalypso-schem2

annotate venus/src/periph/led_mosfet.v @ 62:a1b55af7f04d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
clamping diode pair for the buzzer driving circuit
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 01 Dec 2021 19:26:29 +0000
parents 06e95ff0023b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
52
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module captures the circuit for showing the state of a digital signal
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * on a LED without loading that digital signal by driving the LED from VBAT
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * and using a MOSFET to control it.
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 */
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 module led_mosfet (GND, VBAT, Signal);
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 input GND, VBAT, Signal;
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 wire R_to_LED, LED_to_Q;
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 resistor R (VBAT, R_to_LED);
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 basic_LED led (.A(R_to_LED), .C(LED_to_Q));
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 mosfet Q (.G(Signal), .S(GND), .D(LED_to_Q));
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16
06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 endmodule