hwdef-TF-boost-HDR.h

#ifndef HWDEF_TF_BOOST_HDR_H
#define HWDEF_TF_BOOST_HDR_H

/* thefreeman’s boost driver based on TPS61288 and attiny1616 with high dynamic range
 * hardware version : 0.3
 * BLF thread : https://budgetlightforum.com/node/76762
 *
 * Pin / Name / Function
 *   1    PA2   NC
 *   2    PA3   NC
 *   3    GND   GND
 *   4    VCC   VCC
 *   5    PA4   NC
 *   6    PA5   NC
 *   7    PA6   high current range
 *   8    PA7   batt voltage (2:1 divider) ADC0 AIN7
 *   9    PB5   e-switch
 *  10    PB4   blue aux LED
 *  11    PB3   boost enable
 *  12    PB2   red aux LED
 *  13    PB1   green aux LED
 *  14    PB0   PB0 (TCA0 WO0)
 *  15    PC0   low current PWM  TCD WOC
 *  16    PC1   high current PWM TCD WOD
 *  17    PC2   NC
 *  18    PC3   NC
 *  19    PA0   UDPI
 *  20    PA1   NC
 *
 *
 * one pin enables the boost IC and op-amp for the main LED
 * one pin controls the mosfet for the current range (pin low : low current range, pin high : high current range)
 * one pin sets the sense voltage via PWM to control the level within the low current range
 * another pin for the high current range. both are the same hardware channel, the pins are joined on PCB (unsure if one pin is needed for each ramp, or if only one pin for both is ok)
 */

#define LAYOUT_DEFINED

#ifdef ATTINY
#undef ATTINY
#endif
#define ATTINY 1616
#include <avr/io.h>

#define PWM_CHANNELS 1
// commented out for testing with 8bit
//#define PWM_BITS 10  // 0 to 1023, not 0 to 255
//#define PWM_TOP 1023

#ifndef SWITCH_PIN
#define SWITCH_PIN     PIN5_bp
#define SWITCH_PORT    VPORTB.IN
#define SWITCH_ISC_REG PORTB.PIN5CTRL
#define SWITCH_VECT    PORTB_PORT_vect
#define SWITCH_INTFLG  VPORTB.INTFLAGS
#endif

#ifndef PWM1_PIN
#define PWM1_PIN PB0               //
#define PWM1_LVL TCA0.SINGLE.CMP0  // CMP0 is the output compare register for PB0
#endif

//boost enable
#define LED_ENABLE_PIN   PIN3_bp
#define LED_ENABLE_PORT  PORTB_OUT


#define USE_VOLTAGE_DIVIDER       // use a dedicated pin, not VCC, because VCC input is flattened
#define ADMUX_VOLTAGE_DIVIDER ADC_MUXPOS_AIN7_gc  // which ADC channel to read, AIN7 for PA7

// Raw ADC readings at 4.4V and 2.2V
// calibrate the voltage readout here
// estimated / calculated values are:
// [(Vbatt)*(R2/(R2+R1)) / VREG] * 1023
// R1 = R2 = 100kR, VREG = 2.8V
#ifndef ADC_44
#define ADC_44 804
#endif
#ifndef ADC_22
#define ADC_22 402
#endif

// this driver allows for aux LEDs under the optic
#ifndef AUXLED_R_PIN
#define AUXLED_R_PIN  PIN2_bp
#define AUXLED_R_PORT PORTB
#endif
#ifndef AUXLED_G_PIN
#define AUXLED_G_PIN  PIN1_bp
#define AUXLED_G_PORT PORTB
#endif
#ifndef AUXLED_B_PIN
#define AUXLED_B_PIN  PIN4_bp
#define AUXLED_B_PORT PORTB
#endif
//is that right ??
#define AUXLED_RGB_PORT PORTB  // PORTA or PORTB or PORTC
#define AUXLED_RGB_DDR  DDRB   // DDRA or DDRB or DDRC
#define AUXLED_RGB_PUE  PUEB   // PUEA or PUEB or PUEC


// with so many pins, doing this all with #ifdefs gets awkward...
// ... so just hardcode it in each hwdef file instead
inline void hwdef_setup() {

    // set up the system clock to run at 5 MHz instead of the default 3.33 MHz
    _PROTECTED_WRITE( CLKCTRL.MCLKCTRLB, CLKCTRL_PDIV_4X_gc | CLKCTRL_PEN_bm );

    VPORTB.DIR = PIN3_bm;  // boost enable pin
    VPORTC.DIR = PIN0_bm | PIN1_bm;  // PWM pins as output
    //VPORTA.DIR = PIN6_bm; // current range pin


    // 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; // current range
    //PORTA.PIN7CTRL = PORT_PULLUPEN_bm; // Vbat

    //PORTB.PIN0CTRL = PORT_PULLUPEN_bm; //  PWM
    //PORTB.PIN1CTRL = PORT_PULLUPEN_bm; // Green aux LED
    //PORTB.PIN2CTRL = PORT_PULLUPEN_bm; // red
    //PORTB.PIN3CTRL = PORT_PULLUPEN_bm;  // boost enable
    //PORTB.PIN4CTRL = PORT_PULLUPEN_bm; // Blue Aux LED
    PORTB.PIN5CTRL = PORT_PULLUPEN_bm | PORT_ISC_BOTHEDGES_gc;   // e-switch

    PORTC.PIN0CTRL = PORT_PULLUPEN_bm; // low current PWM
    PORTC.PIN1CTRL = PORT_PULLUPEN_bm; // high current PWM
    PORTC.PIN2CTRL = PORT_PULLUPEN_bm;
    PORTC.PIN3CTRL = PORT_PULLUPEN_bm;


     //set up PWM TCA
    TCA0.SINGLE.CTRLB = TCA_SINGLE_CMP0EN_bm | TCA_SINGLE_WGMODE_SINGLESLOPE_gc;
    TCA0.SINGLE.PER = 255;
    TCA0.SINGLE.CTRLA = TCA_SINGLE_CLKSEL_DIV1_gc | TCA_SINGLE_ENABLE_bm;

}


#endif