reorganized project files (part 1)

(just moved files, didn't change the contents yet,
 and nothing will work without updating #includes and build scripts and stuff)

1 files changed, 137 insertions, 0 deletions

diff --git a/hw/thefreeman/lin16dac/hwdef.h b/hw/thefreeman/lin16dac/hwdef.h
new file mode 100644
index 0000000..c0d0638
--- /dev/null
+++ b/hw/thefreeman/lin16dac/hwdef.h
@@ -0,0 +1,137 @@
+// thefreeman's Linear 16 driver using DAC control
+// Copyright (C) 2021-2023 thefreeman, Selene ToyKeeper
+// SPDX-License-Identifier: GPL-3.0-or-later
+#pragma once
+
+/*
+ * PA6 - DAC for LED brightness control
+ * PA7 - Op-amp enable pin
+ * PB5 - Aux LED
+ * PB4 - Switch pin, internal pullup
+ * PB3 - HDR control, set High to enable the high power channel, set Low for low power
+ * Read voltage from VCC pin, has PFET so no drop
+ */
+
+#define ATTINY 1616
+#include <avr/io.h>
+
+#define HWDEF_C_FILE hwdef-thefreeman-lin16dac.c
+
+// allow using aux LEDs as extra channel modes
+#include "chan-aux.h"
+
+// channel modes:
+// * 0. main LEDs
+// * 1+. aux RGB
+#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 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
+
+// Opamp enable
+// For turning on and off the op-amp
+#define OPAMP_ENABLE_PIN   PIN7_bp
+#define OPAMP_ENABLE_PORT  PORTA_OUT
+// how many ms to delay turning on the lights after enabling the channel
+// (FIXME: 80 is long enough it's likely to cause bugs elsewhere,
+//  as events stack up unhandled for 5 consecutive WDT ticks)
+#define OPAMP_ON_DELAY 80
+
+// HDR
+// turns on HDR FET for the high current range
+#define HDR_ENABLE_PIN   PIN3_bp
+#define HDR_ENABLE_PORT  PORTB_OUT
+
+// e-switch
+#define SWITCH_PIN      PIN4_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 0  // using a PFET so no appreciable drop
+#endif
+
+// lighted button
+#define AUXLED_PIN   PIN5_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
+    // (it'll get underclocked to 2.5 MHz later)
+    // TODO: maybe run even slower?
+    _PROTECTED_WRITE( CLKCTRL.MCLKCTRLB,
+                      CLKCTRL_PDIV_2X_gc | CLKCTRL_PEN_bm );
+
+    VPORTA.DIR = PIN6_bm   // DAC
+               | PIN7_bm;  // Opamp
+    VPORTB.DIR = PIN3_bm;  // HDR
+    //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;  // DAC ouput
+    //PORTA.PIN7CTRL = PORT_PULLUPEN_bm;  // Op-amp enable pin
+
+    PORTB.PIN0CTRL = PORT_PULLUPEN_bm;
+    PORTB.PIN1CTRL = PORT_PULLUPEN_bm;
+    PORTB.PIN2CTRL = PORT_PULLUPEN_bm;
+    //PORTB.PIN3CTRL = PORT_PULLUPEN_bm;  // HDR channel selection
+    PORTB.PIN4CTRL = PORT_PULLUPEN_bm
+                   | PORT_ISC_BOTHEDGES_gc;  // e-switch
+    //PORTB.PIN5CTRL = PORT_PULLUPEN_bm;  // Aux LED
+
+    PORTC.PIN0CTRL = PORT_PULLUPEN_bm;
+    PORTC.PIN1CTRL = PORT_PULLUPEN_bm;
+    PORTC.PIN2CTRL = PORT_PULLUPEN_bm;
+    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
+