From 8a330b33ff41ffc1ec3f8fa39722e93115ea3f0f Mon Sep 17 00:00:00 2001 From: Legonut Date: Tue, 4 Dec 2018 21:15:52 -0500 Subject: Keyboard: Add new keyboard "Sol" from RGBKB (#4497) * Add final RGBKB Sol firmware * Apply suggestions from code review Apply most of the changes noroadsleft has suggested Co-Authored-By: Legonut * Cleanup readme * Cleanup keymaps per @noroadslefts suggestions * Remove eeproms, use set_single_persistent_default_layer * Suggestions from @noroadsleft and @drashna some small cleanup * Change RGB_SMOD to RGB_RMOD * fix RGB_SMOD * Apply suggestions from code review Remove redundant lines Co-Authored-By: Legonut --- keyboards/sol/common/knob_v2.c | 71 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 keyboards/sol/common/knob_v2.c (limited to 'keyboards/sol/common/knob_v2.c') diff --git a/keyboards/sol/common/knob_v2.c b/keyboards/sol/common/knob_v2.c new file mode 100644 index 000000000..f22f7c5d8 --- /dev/null +++ b/keyboards/sol/common/knob_v2.c @@ -0,0 +1,71 @@ +#include "knob_v2.h" + +bool knob_prev_a = false; +static knob_report_t knob_report = {.dir = 0, .phase = 0}; + +void knob_init(void) { + // I use pins D1 (ISR1) & D4 for a knob. + + // Set pin mode for D4 as input. + DDRD &= ~(0UL << ENCODER_PIN_2); + + // Enable internal pull-up for D4. + // This is done by "writing" 1 to a pin that has its mode set to input. + PORTD |= (1 << ENCODER_PIN_2); + + // Enable interrupt for D1 + // For more info on the below flags see this awesome section 11.1 (pages 89-90) here: + // https://cdn-shop.adafruit.com/datasheets/atmel-7766-8-bit-avr-atmega16u4-32u4_datasheet.pdf + // Set pin mode & pull-up. + DDRD &= ~(0UL << ENCODER_PIN_1); + PORTD |= (1UL << ENCODER_PIN_1); + + // INT: 33221100 + EICRA |= 0b00010000; // 0b01 - any edge + // INT: 6 3210 + EIMSK |= 0b00000100; +} + +ISR(ENCODER_INT) { + bool a = PIND & (1 << ENCODER_PIN_1); + + if (knob_prev_a != a) { + // "A" channel has REALLY changed. + knob_report.phase = a; + knob_prev_a = a; + bool b = PIND & (1 << ENCODER_PIN_2); + if (a == b) { + // Halfway through CCW rotation (A == B) + // + // +---YOU ARE HERE (A=1, B=1) + // | +---OR HERE (A=0, B=0) + // | | + // v v + // A: _____/^^^^^\__ + // B: __/^^^^^\_____ + knob_report.dir++; + } else { + // Halfway through CW rotation (A != B) + // + // +---YOU ARE HERE (A=1, B=0) + // | +---OR HERE (A=0, B=1) + // | | + // v v + // A: _____/^^^^^\_____ + // B: ________/^^^^^\__ + knob_report.dir--; + } + } +} + +knob_report_t knob_report_read(void) { + // Return knob report. + return knob_report; +} + +void knob_report_reset(void) { + // Call this ASAP once you've processed the previous knob report. + // TODO: This should probably be called within `knob_report_read`. + knob_report.dir = 0; + knob_report.phase = 0; +} -- cgit v1.2.3