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annotate venus/src/periph/led_mosfet.v @ 73:a730e72d4bec

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new 3.3V USB LDO regulator part, direct replacement
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 03 Dec 2021 07:56:26 +0000
parents 06e95ff0023b
children
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06e95ff0023b ON_nOFF indicator LED implemented
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1 /*
06e95ff0023b ON_nOFF indicator LED implemented
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2 * This module captures the circuit for showing the state of a digital signal
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3 * on a LED without loading that digital signal by driving the LED from VBAT
06e95ff0023b ON_nOFF indicator LED implemented
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4 * and using a MOSFET to control it.
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5 */
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6
06e95ff0023b ON_nOFF indicator LED implemented
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7 module led_mosfet (GND, VBAT, Signal);
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06e95ff0023b ON_nOFF indicator LED implemented
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9 input GND, VBAT, Signal;
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06e95ff0023b ON_nOFF indicator LED implemented
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11 wire R_to_LED, LED_to_Q;
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06e95ff0023b ON_nOFF indicator LED implemented
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13 resistor R (VBAT, R_to_LED);
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14 basic_LED led (.A(R_to_LED), .C(LED_to_Q));
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15 mosfet Q (.G(Signal), .S(GND), .D(LED_to_Q));
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17 endmodule