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Start on an app for a tron bag

This commit is contained in:
Savanni D'Gerinel 2023-06-17 11:52:27 -04:00
parent b15c5edb4d
commit ef1c0c5834
2 changed files with 85 additions and 0 deletions
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23
flake.nix
View File

@ -90,6 +90,7 @@
(packages."x86_64-linux"."radio-rx" { gcc = "${avr.gcc}/bin/avr-gcc"; cflags = mcu_cflags atmega32u4; })
(packages."x86_64-linux"."lantern" { gcc = "${avr.gcc}/bin/avr-gcc"; cflags = mcu_cflags atmega32u4; avr = true; })
(packages."x86_64-linux"."lantern-controller" { gcc = "${avr.gcc}/bin/avr-gcc"; cflags = mcu_cflags atmega32u4; avr = true; })
(packages."x86_64-linux"."tron-bag" { gcc = "${avr.gcc}/bin/avr-gcc"; cflags = mcu_cflags attiny85; avr = true; })
];
};
@ -284,6 +285,28 @@
];
};
packages."x86_64-linux"."tron-bag_" =
let
pkgs = import nixpkgs { system = "x86_64-linux"; };
avr = pkgs.pkgsCross.avr.buildPackages;
in packages."x86_64-linux"."tron-bag" { gcc = "${avr.gcc}/bin/avr-gcc"; cflags = mcu_cflags attiny85; avr = true; };
packages."x86_64-linux"."tron-bag" =
{ gcc, cflags, avr }:
let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in mkProgram {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "tron-bag";
psrc = ./tron-bag;
inherit avr;
pbuildInputs = [
(packages."x86_64-linux"."dio" { inherit gcc cflags; })
];
};
devShell."x86_64-linux" =
let
pkgs = import nixpkgs { system = "x86_64-linux"; };

62
tron-bag/main.c Normal file
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@ -0,0 +1,62 @@
#include <avr/interrupt.h>
#include <avr/sleep.h>
#include <dio.h>
/*
const struct avr_mmcu_vcd_trace_t _mytrace[] _MMCU_ = {
{ AVR_MCU_VCD_SYMBOL("PORTB"), .what = (void *)&PORTB, },
};
*/
#define FPS 100
#define FPS_MS 1000 / FPS
#define MULT 5
typedef struct {
uint8_t value;
int8_t inc;
} counter_t;
void step_counter(counter_t *counter) {
int16_t value = counter->value;
value += counter->inc;
if (value >= 255) {
counter->value = 255;
counter->inc = -1;
} else if (value <= 0) {
counter->value = 0;
counter->inc = 1;
} else {
counter->value = value;
}
}
int main(void) {
dio_t dio0 = (dio_t){ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 0 };
dio_t dio1 = (dio_t){ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 1 };
dio_set_direction(&dio0, LINE_OUT);
dio_set_direction(&dio1, LINE_OUT);
// GTCCR = _BV(TSM) | _BV(PSR0);
TCCR0A = _BV(COM0A1) | _BV(COM0A0) | _BV(COM0B1) | _BV(COM0B0) | _BV(WGM01) | _BV(WGM00);
TCCR0B = _BV(WGM02) | _BV(CS00);
counter_t red = (counter_t){ .value = 128, .inc = -1 };
counter_t blue = (counter_t){ .value = 128, .inc = -1 };
// GTCCR &= ~_BV(TSM);
while(1) {
step_counter(&red);
step_counter(&blue);
OCR0A = red.value;
OCR0B = blue.value;
_delay_ms(FPS_MS);
}
return 0;
}