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annotate venus/src/periph/led_npn.v @ 98:3ab69117b09f default tip

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minnie/doc/Design-spec: finished in the first pass
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 01 Oct 2023 08:17:05 +0000
parents 06e95ff0023b
children
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06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
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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
06e95ff0023b ON_nOFF indicator LED implemented
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3 * on a LED using an NPN transistor instead of a MOSFET, like we did for PWL
06e95ff0023b ON_nOFF indicator LED implemented
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4 * on Caramel2.
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5 */
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6
06e95ff0023b ON_nOFF indicator LED implemented
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7 module led_npn (GND, VBAT, Signal);
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8
06e95ff0023b ON_nOFF indicator LED implemented
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9 input GND, VBAT, Signal;
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10
06e95ff0023b ON_nOFF indicator LED implemented
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11 wire R_to_LED, LED_to_Q;
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12
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 transistor_slot Q (.E(GND), .B(Signal), .C(LED_to_Q));
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16
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17 endmodule