FreeCalypso > hg > freecalypso-schem2

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

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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
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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
Mychaela Falconia <falcon@freecalypso.org>
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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>
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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
Mychaela Falconia <falcon@freecalypso.org>
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4 * on Caramel2.
06e95ff0023b ON_nOFF indicator LED implemented
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5 */
06e95ff0023b ON_nOFF indicator LED implemented
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6
06e95ff0023b ON_nOFF indicator LED implemented
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7 module led_npn (GND, VBAT, Signal);
06e95ff0023b ON_nOFF indicator LED implemented
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06e95ff0023b ON_nOFF indicator LED implemented
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9 input GND, VBAT, Signal;
06e95ff0023b ON_nOFF indicator LED implemented
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06e95ff0023b ON_nOFF indicator LED implemented
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11 wire R_to_LED, LED_to_Q;
06e95ff0023b ON_nOFF indicator LED implemented
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06e95ff0023b ON_nOFF indicator LED implemented
Mychaela Falconia <falcon@freecalypso.org>
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13 resistor R (VBAT, R_to_LED);
06e95ff0023b ON_nOFF indicator LED implemented
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14 basic_LED led (.A(R_to_LED), .C(LED_to_Q));
06e95ff0023b ON_nOFF indicator LED implemented
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15 transistor_slot Q (.E(GND), .B(Signal), .C(LED_to_Q));
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06e95ff0023b ON_nOFF indicator LED implemented
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17 endmodule