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// hwdef for thefreeman's boost driver 2.1 w/ MP3431, DAC, ARGB
// Copyright (C) 2023 TBD (thefreeman), Selene ToyKeeper
// SPDX-License-Identifier: GPL-3.0-or-later
#pragma once
/* thefreeman’s Boost driver based on MP3431 and attiny1616
* with high dynamic range and DAC control, AUX : RGB + button
* hardware version : 2.0+
* compatible with BST20-FWxA v1.0 (no button LED A)
*
* Pin / Name / Function
* 1 PA2
* 2 PA3
* 3 GND GND
* 4 VCC VCC
* 5 PA4
* 6 PA5
* 7 PA6 DAC
* 8 PA7
* 9 PB5 IN- NFET
* 10 PB4 HDR
* 11 PB3 B: blue aux LED
* 12 PB2 G: green aux LED
* 13 PB1 R: red aux LED
* 14 PB0
* 15 PC0 boost enable
* 16 PC1 A: button LED
* 17 PC2 e-switch
* 18 PC3
* 19 PA0 UDPI
* 20 PA1
*
* BST EN enable the boost regulator and Op-Amp
* DAC sets the current, max current depends on Vset voltage divider and Rsense
* HDR FET switches between high value Rsense (low current range, pin low),
* and low value Rsense (high current range, pin high)
* IN- NFET : pull up after BST enable to eliminate startup flash, pull down otherwise
*/
#define HWDEF_C thefreeman/boost21-mp3431-hdr-dac-argb/hwdef.c
// allow using aux LEDs as extra channel modes
#include "fsm/chan-rgbaux.h"
// channel modes:
// * 0. main LEDs
// * 1+. aux RGB
#define NUM_CHANNEL_MODES (1 + NUM_RGB_AUX_CHANNEL_MODES)
enum CHANNEL_MODES {
CM_MAIN = 0,
RGB_AUX_ENUMS
};
#define DEFAULT_CHANNEL_MODE CM_MAIN
// right-most bit first, modes are in fedcba9876543210 order
#define CHANNEL_MODES_ENABLED 0b0000000000000001
#define PWM_CHANNELS 1 // old, remove this
#define PWM_BITS 8 // 8-bit DAC
#define PWM_GET PWM_GET8
#define PWM_DATATYPE uint8_t
#define PWM_DATATYPE2 uint16_t // only needs 32-bit if ramp values go over 255
#define PWM1_DATATYPE uint8_t // main LED ramp
// main LED outputs
#define DAC_LVL DAC0.DATA // 0 to 255, for 0V to Vref
#define DAC_VREF VREF.CTRLA // 0.55V or 2.5V
#define PWM_TOP_INIT 255 // highest value used in top half of ramp (unused?)
// Vref values
#define V055 16
#define V11 17
#define V25 18
#define V43 19
#define V15 20
// BST enable
#define BST_ENABLE_PIN PIN0_bp
#define BST_ENABLE_PORT PORTC_OUT
// HDR
// turns on HDR FET for the high current range
#define HDR_ENABLE_PIN PIN4_bp
#define HDR_ENABLE_PORT PORTB_OUT
// IN- NFET
// pull high to force output to zero to eliminate the startup flash
#define IN_NFET_DELAY_TIME 8 // (ms)
#define IN_NFET_ENABLE_PIN PIN5_bp
#define IN_NFET_ENABLE_PORT PORTB_OUT
// e-switch
#ifndef SWITCH_PIN
#define SWITCH_PIN PIN2_bp
#define SWITCH_PORT VPORTC.IN
#define SWITCH_ISC_REG PORTC.PIN2CTRL
#define SWITCH_VECT PORTC_PORT_vect
#define SWITCH_INTFLG VPORTC.INTFLAGS
#endif
// average drop across diode on this hardware
#ifndef VOLTAGE_FUDGE_FACTOR
#define VOLTAGE_FUDGE_FACTOR 0 // using a PFET so no appreciable drop
#endif
// this driver allows for aux LEDs under the optic
#define AUXLED_R_PIN PIN1_bp
#define AUXLED_G_PIN PIN2_bp
#define AUXLED_B_PIN PIN3_bp
#define AUXLED_RGB_PORT PORTB // PORTA or PORTB or PORTC
// this light has three aux LED channels: R, G, B
#define USE_AUX_RGB_LEDS
// A: button LED
#ifndef BUTTON_LED_PIN
#define BUTTON_LED_PIN PIN1_bp
#define BUTTON_LED_PORT PORTC
#endif
inline void hwdef_setup() {
// TODO: for this DAC controlled-light, try to decrease the clock speed or use the ULP
// set up the system clock to run at 10 MHz to match other attiny1616 lights
_PROTECTED_WRITE( CLKCTRL.MCLKCTRLB,
CLKCTRL_PDIV_2X_gc | CLKCTRL_PEN_bm );
VPORTA.DIR = PIN6_bm; // DAC
VPORTB.DIR = PIN1_bm // R
| PIN2_bm // G
| PIN3_bm // B
| PIN4_bm // HDR
| PIN5_bm; // IN- NFET
VPORTC.DIR = PIN0_bm // BST EN
| PIN1_bm; // A
// 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; // DAC
PORTA.PIN7CTRL = PORT_PULLUPEN_bm;
PORTB.PIN0CTRL = PORT_PULLUPEN_bm;
//PORTB.PIN1CTRL = PORT_PULLUPEN_bm; // R
//PORTB.PIN2CTRL = PORT_PULLUPEN_bm; // G
//PORTB.PIN3CTRL = PORT_PULLUPEN_bm; // B
//PORTB.PIN4CTRL = PORT_PULLUPEN_bm; // HDR
//PORTB.PIN5CTRL = PORT_PULLUPEN_bm; // IN- NFET
//PORTC.PIN0CTRL = PORT_PULLUPEN_bm; // EN
//PORTC.PIN1CTRL = PORT_PULLUPEN_bm; // A
PORTC.PIN2CTRL = PORT_PULLUPEN_bm
| PORT_ISC_BOTHEDGES_gc; // e-switch
PORTC.PIN3CTRL = PORT_PULLUPEN_bm;
// set up the DAC
// https://ww1.microchip.com/downloads/en/DeviceDoc/ATtiny1614-16-17-DataSheet-DS40002204A.pdf
// DAC ranges from 0V to (255 * Vref) / 256
// also VREF_DAC0REFSEL_0V55_gc and VREF_DAC0REFSEL_1V1_gc and VREF_DAC0REFSEL_2V5_gc
VREF.CTRLA |= VREF_DAC0REFSEL_2V5_gc;
VREF.CTRLB |= VREF_DAC0REFEN_bm;
DAC0.CTRLA = DAC_ENABLE_bm | DAC_OUTEN_bm;
DAC0.DATA = 255; // set the output voltage
}
#define LAYOUT_DEFINED
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