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#ifndef HWDEF_SOFIRN_SP10S_H
#define HWDEF_SOFIRN_SP10S_H
// TODO: rename to sofirn-sp10s-gchart?
/* gChart's PIC12 to ATTINY1616 v1 adapter for the SP10S
https://oshpark.com/shared_projects/b4IZEGSy
PIC12 Pinout:
1 - VDD
2 - No Connect
3 - Low Channel FET (series 4.7K Ohms)
4 - Switch
5 - High Channel FET (main PWM)
6 - Voltage Divider (300K:100K Ohms)
7 - Boost chip enable
8 - GND
ATTINY1616 Mapping:
2 - PA5 : (no connect)
3 - PB5 : TCA0 - WO2 Alternate MUX
4 - PB3 : (switch)
5 - PB0 : TCA0 - WO0
6 - PB4 : ADC0 - AIN9
7 - PA1 : (boost enable)
*/
#define LAYOUT_DEFINED
#ifdef ATTINY
#undef ATTINY
#endif
#define ATTINY 1616
#include <avr/io.h>
#ifndef SWITCH_PIN
#define SWITCH_PIN 3
#define SWITCH_PORT VPORTB.IN
#define SWITCH_ISC_REG PORTB.PIN3CTRL
#define SWITCH_VECT PORTB_PORT_vect
#define SWITCH_INTFLG VPORTB.INTFLAGS
#endif
#define PWM_CHANNELS 2
// Small channel
#ifndef PWM1_PIN
#define PWM1_PIN PB5
#define PWM1_LVL TCA0.SINGLE.CMP2 // PB5 is Alternate MUX for TCA Compare 2
#endif
// Big channel
#ifndef PWM2_PIN
#define PWM2_PIN PB0
#define PWM2_LVL TCA0.SINGLE.CMP0 // PB0 is TCA Compare 0
#endif
#define LED_ENABLE_PIN PIN1_bp
#define LED_ENABLE_PORT PORTA_OUT
#define USE_VOLTAGE_DIVIDER // use a dedicated pin, not VCC, because VCC input is flattened
#define DUAL_VOLTAGE_FLOOR 20 // for AA/14500 boost drivers, don't indicate low voltage if below this level
#define DUAL_VOLTAGE_LOW_LOW 07 // the lower voltage range's danger zone 0.7 volts
#define ADMUX_VOLTAGE_DIVIDER ADC_MUXPOS_AIN9_gc // which ADC channel to read
// Raw ADC readings at 4.4V and 2.2V
// calibrate the voltage readout here
// estimated / calculated values are:
// (voltage - D1) * (R2/(R2+R1) * 1024 / 1.1)
// Resistors are 300,000 and 100,000
#ifndef ADC_44
#define ADC_44 1023 // raw value at 4.40V
#endif
#ifndef ADC_22
#define ADC_22 512 // raw value at 2.20V
#endif
// 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 );
VPORTA.DIR = PIN1_bm; // Boost enable pin
VPORTB.DIR = PIN0_bm | PIN5_bm; // PWM pins as output
//VPORTC.DIR = ...;
// enable pullups on the input pins to reduce power
PORTA.PIN0CTRL = PORT_PULLUPEN_bm;
//PORTA.PIN1CTRL = PORT_PULLUPEN_bm; // Boost enable pin
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; // Big PWM channel
PORTB.PIN1CTRL = PORT_PULLUPEN_bm;
PORTB.PIN2CTRL = PORT_PULLUPEN_bm;
PORTB.PIN3CTRL = PORT_PULLUPEN_bm | PORT_ISC_BOTHEDGES_gc; // Switch
//PORTB.PIN4CTRL = PORT_PULLUPEN_bm; // Voltage divider
//PORTB.PIN5CTRL = PORT_PULLUPEN_bm; // Small PWM channel
//PORTC.PIN0CTRL = PORT_PULLUPEN_bm; connected to the ADC via airwire
PORTC.PIN1CTRL = PORT_PULLUPEN_bm;
PORTC.PIN2CTRL = PORT_PULLUPEN_bm;
PORTC.PIN3CTRL = PORT_PULLUPEN_bm;
// set up the PWM
// TODO: add references to MCU documentation
PORTMUX.CTRLC = PORTMUX_TCA02_ALTERNATE_gc; // Use alternate pin for TCA0:WO2
TCA0.SINGLE.CTRLB = TCA_SINGLE_CMP0EN_bm | TCA_SINGLE_CMP2EN_bm | TCA_SINGLE_WGMODE_SINGLESLOPE_gc;
TCA0.SINGLE.PER = 255;
TCA0.SINGLE.CTRLA = TCA_SINGLE_CLKSEL_DIV1_gc | TCA_SINGLE_ENABLE_bm;
}
#endif
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