[FL-85][FL-446][FL-720] Dallas key blanks and OneWire lib rework (#313)

* sepate one wire class * TM2004 writer * app mode write ds1990 * test another blanks protocol * new ibutton slave * one wire states * tim1 capture compare and update interrupts * interrupt mgr, new timers IRQ * discard HAL_TIM_PeriodElapsedCallback from main * add exti_14 line * add external interrupt callback * use int mgr in input * better interrupt managment * add interrupt callback enable and disable fns * properly init app * changed timings * rename one wire classes * use new owb classes * properly remove interrupts * new blanks writer * remove unused tests * new core includes * extern c guard * fix api_interrupt_remove usage * remove debug info, new way to detect blanks writing * remove copy constructor * change keys template * fix app sources recipe
2021-01-28 22:30:31 +10:00
parent a7951ade69
commit cf1c8fb223
31 changed files with 1099 additions and 869 deletions
--- a/lib/onewire/one_wire_master.cpp
+++ b/lib/onewire/one_wire_master.cpp
@@ -0,0 +1,116 @@
+#pragma once
+#include "one_wire_master.h"
+#include "one_wire_timings.h"
+
+OneWireMaster::OneWireMaster(const GpioPin* one_wire_gpio) {
+    gpio = one_wire_gpio;
+}
+
+OneWireMaster::~OneWireMaster() {
+    stop();
+}
+
+void OneWireMaster::start(void) {
+    gpio_init(gpio, GpioModeOutputOpenDrain);
+}
+
+void OneWireMaster::stop(void) {
+    gpio_init(gpio, GpioModeAnalog);
+}
+
+bool OneWireMaster::reset(void) {
+    uint8_t r;
+    uint8_t retries = 125;
+
+    // wait until the gpio is high
+    gpio_write(gpio, true);
+    do {
+        if(--retries == 0) return 0;
+        delay_us(2);
+    } while(!gpio_read(gpio));
+
+    // pre delay
+    delay_us(OneWireTiming::RESET_DELAY_PRE);
+
+    // drive low
+    gpio_write(gpio, false);
+    delay_us(OneWireTiming::RESET_DRIVE);
+
+    // release
+    gpio_write(gpio, true);
+    delay_us(OneWireTiming::RESET_RELEASE);
+
+    // read and post delay
+    r = !gpio_read(gpio);
+    delay_us(OneWireTiming::RESET_DELAY_POST);
+
+    return r;
+}
+
+bool OneWireMaster::read_bit(void) {
+    bool result;
+
+    // drive low
+    gpio_write(gpio, false);
+    delay_us(OneWireTiming::READ_DRIVE);
+
+    // release
+    gpio_write(gpio, true);
+    delay_us(OneWireTiming::READ_RELEASE);
+
+    // read and post delay
+    result = gpio_read(gpio);
+    delay_us(OneWireTiming::READ_DELAY_POST);
+
+    return result;
+}
+
+void OneWireMaster::write_bit(bool value) {
+    if(value) {
+        // drive low
+        gpio_write(gpio, false);
+        delay_us(OneWireTiming::WRITE_1_DRIVE);
+
+        // release
+        gpio_write(gpio, true);
+        delay_us(OneWireTiming::WRITE_1_RELEASE);
+    } else {
+        // drive low
+        gpio_write(gpio, false);
+        delay_us(OneWireTiming::WRITE_0_DRIVE);
+
+        // release
+        gpio_write(gpio, true);
+        delay_us(OneWireTiming::WRITE_0_RELEASE);
+    }
+}
+
+uint8_t OneWireMaster::read(void) {
+    uint8_t result = 0;
+
+    for(uint8_t bitMask = 0x01; bitMask; bitMask <<= 1) {
+        if(read_bit()) {
+            result |= bitMask;
+        }
+    }
+
+    return result;
+}
+
+void OneWireMaster::read_bytes(uint8_t* buffer, uint16_t count) {
+    for(uint16_t i = 0; i < count; i++) {
+        buffer[i] = read();
+    }
+}
+
+void OneWireMaster::write(uint8_t value) {
+    uint8_t bitMask;
+
+    for(bitMask = 0x01; bitMask; bitMask <<= 1) {
+        write_bit((bitMask & value) ? 1 : 0);
+    }
+}
+
+void OneWireMaster::skip(void) {
+    write(0xCC);
+}