~toykeeper/flashlight-firmware/fsm

// gChart's custom FET+1 driver layout

// Copyright (C) 2020-2023 gchart, Selene ToyKeeper

// SPDX-License-Identifier: GPL-3.0-or-later

#pragma once

/*

 * PB0 - PWM for FET (TCA - WO0)

 * PB1 - PWM for 7135 (TCA - WO1)

 * PB2 - Switch pin, internal pullup

 * PB3 - Aux LED with 4700 Ohm series resistor

 * Read voltage from VCC pin, has diode with ~0.4v drop

*/

#define ATTINY 1616

#include <avr/io.h>

// nearly all t1616-based FET+1 drivers work pretty much the same

// (this one has single-color aux like the TS10)

#define HWDEF_C_FILE hwdef-wurkkos-ts10.c

// allow using aux LEDs as extra channel modes

#include "chan-aux.h"

// channel modes:

// * 0. FET+7135 stacked

// * 1. aux LEDs

#define NUM_CHANNEL_MODES  2

enum CHANNEL_MODES {

    CM_MAIN = 0,

    CM_AUX

};

#define DEFAULT_CHANNEL_MODE  CM_MAIN

// right-most bit first, modes are in fedcba9876543210 order

#define CHANNEL_MODES_ENABLED 0b00000001

#define PWM_CHANNELS 2  // old, remove this

#define PWM_BITS      16        // dynamic 16-bit, but never goes over 255

#define PWM_GET       PWM_GET8

#define PWM_DATATYPE  uint16_t  // is used for PWM_TOPS (which goes way over 255)

#define PWM_DATATYPE2 uint16_t  // only needs 32-bit if ramp values go over 255

#define PWM1_DATATYPE uint8_t   // 1x7135 ramp

#define PWM2_DATATYPE uint8_t   // DD FET ramp

// PWM parameters of both channels are tied together because they share a counter

#define PWM_TOP TCA0.SINGLE.PERBUF   // holds the TOP value for for variable-resolution PWM

#define PWM_TOP_INIT  255    // highest value used in top half of ramp

// not necessary when double-buffered "BUF" registers are used

#define PWM_CNT TCA0.SINGLE.CNT   // for resetting phase after each TOP adjustment

// 1x7135 channel

#define CH1_PIN  PB1

#define CH1_PWM  TCA0.SINGLE.CMP1BUF  // CMP1 is the output compare register for PB1

// DD FET channel

#define CH2_PIN  PB0

#define CH2_PWM  TCA0.SINGLE.CMP0BUF  // CMP0 is the output compare register for PB0

// e-switch

#define SWITCH_PIN      PIN2_bp

#define SWITCH_PORT     VPORTB.IN

#define SWITCH_ISC_REG  PORTB.PIN2CTRL

#define SWITCH_VECT     PORTB_PORT_vect

#define SWITCH_INTFLG   VPORTB.INTFLAGS

// average drop across diode on this hardware

#ifndef VOLTAGE_FUDGE_FACTOR

#define VOLTAGE_FUDGE_FACTOR 8  // 4 = add 0.20V

#endif

// lighted button

#define AUXLED_PIN   PIN3_bp

#define AUXLED_PORT  PORTB

inline void hwdef_setup() {

    // set up the system clock to run at 10 MHz instead of the default 3.33 MHz

    _PROTECTED_WRITE( CLKCTRL.MCLKCTRLB,

                      CLKCTRL_PDIV_2X_gc | CLKCTRL_PEN_bm );

    //VPORTA.DIR = 0b00000010;

    // Outputs

    VPORTB.DIR = PIN0_bm   // DD FET

               | PIN1_bm   // 7135

               | PIN3_bm;  // Aux LED

    //VPORTC.DIR = 0b00000000;

    // enable pullups on the input pins to reduce power

    PORTA.PIN0CTRL = PORT_PULLUPEN_bm;

    PORTA.PIN1CTRL = PORT_PULLUPEN_bm;

    PORTA.PIN2CTRL = PORT_PULLUPEN_bm;

    PORTA.PIN3CTRL = PORT_PULLUPEN_bm;

    PORTA.PIN4CTRL = PORT_PULLUPEN_bm;

    PORTA.PIN5CTRL = PORT_PULLUPEN_bm;

    PORTA.PIN6CTRL = PORT_PULLUPEN_bm;

    PORTA.PIN7CTRL = PORT_PULLUPEN_bm;

    //PORTB.PIN0CTRL = PORT_PULLUPEN_bm; // FET channel

    //PORTB.PIN1CTRL = PORT_PULLUPEN_bm; // 7135 channel

    PORTB.PIN2CTRL = PORT_PULLUPEN_bm | PORT_ISC_BOTHEDGES_gc;  // switch

    //PORTB.PIN3CTRL = PORT_PULLUPEN_bm; // Aux LED

    PORTB.PIN4CTRL = PORT_PULLUPEN_bm;

    PORTB.PIN5CTRL = PORT_PULLUPEN_bm;

    PORTC.PIN0CTRL = PORT_PULLUPEN_bm;

    PORTC.PIN1CTRL = PORT_PULLUPEN_bm;

    PORTC.PIN2CTRL = PORT_PULLUPEN_bm;

    PORTC.PIN3CTRL = PORT_PULLUPEN_bm;

    // set up the PWM

    // https://ww1.microchip.com/downloads/en/DeviceDoc/ATtiny1614-16-17-DataSheet-DS40002204A.pdf

    // PB0 is TCA0:WO0, use TCA_SINGLE_CMP0EN_bm

    // PB1 is TCA0:WO1, use TCA_SINGLE_CMP1EN_bm

    // PB2 is TCA0:WO2, use TCA_SINGLE_CMP2EN_bm

    // For Fast (Single Slope) PWM use TCA_SINGLE_WGMODE_SINGLESLOPE_gc

    // For Phase Correct (Dual Slope) PWM use TCA_SINGLE_WGMODE_DSBOTTOM_gc

    // See the manual for other pins, clocks, configs, portmux, etc

    TCA0.SINGLE.CTRLB = TCA_SINGLE_CMP0EN_bm

                      | TCA_SINGLE_CMP1EN_bm

                      | TCA_SINGLE_WGMODE_DSBOTTOM_gc;

    TCA0.SINGLE.CTRLA = TCA_SINGLE_CLKSEL_DIV1_gc

                      | TCA_SINGLE_ENABLE_bm;

    PWM_TOP = PWM_TOP_INIT;

}

#define LAYOUT_DEFINED