mirror of https://github.com/midilab/uClock
Merge pull request #24 from midilab/stm32xx-support
* STM32 generic support by using STM32Duino and Hal library. * Independent platform implementation support for easy arch ports, check platforms/ dir. * Fixed missing name.c file for usb-midi definitions on teensy arm platformspull/26/head v1.3.0
midilab
12 months ago
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ea8ef07e5b
@ -0,0 +1,83 @@ |
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/* Uart MIDI out
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*
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* This example demonstrates how to send MIDI data via Uart
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* interface on STM32 family.
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*
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* This example code is in the public domain. |
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* |
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* Requires STM32Duino board manager to be installed. |
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*
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* Define HardwareSerial using any available UART/USART.
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* Nucleo boards have UART/USART pins that are used by the ST-LINK interface (unless using solder bridging). |
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* |
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* Tested on Nucleo-F401RE and Nucleo-F072RB (PA9=D8 PA10=D2 on the Arduino pins) |
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* |
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* Code by midilab contact@midilab.co |
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* Example modified by Jackson Devices contact@jacksondevices.com |
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*/ |
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#include <uClock.h> |
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// MIDI clock, start and stop byte definitions - based on MIDI 1.0 Standards.
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#define MIDI_CLOCK 0xF8 |
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#define MIDI_START 0xFA |
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#define MIDI_STOP 0xFC |
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HardwareSerial Serial1(PA10, PA9); |
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uint8_t bpm_blink_timer = 1; |
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void handle_bpm_led(uint32_t tick) |
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{ |
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// BPM led indicator
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if ( !(tick % (96)) || (tick == 1) ) { // first compass step will flash longer
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bpm_blink_timer = 8; |
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digitalWrite(LED_BUILTIN, HIGH); |
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} else if ( !(tick % (24)) ) { // each quarter led on
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bpm_blink_timer = 1; |
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digitalWrite(LED_BUILTIN, HIGH); |
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} else if ( !(tick % bpm_blink_timer) ) { // get led off
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digitalWrite(LED_BUILTIN, LOW); |
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} |
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} |
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// Internal clock handlers
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void ClockOut96PPQN(uint32_t tick) { |
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// Send MIDI_CLOCK to external gear
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Serial1.write(MIDI_CLOCK); |
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handle_bpm_led(tick); |
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} |
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void onClockStart() { |
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// Send MIDI_START to external gear
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Serial1.write(MIDI_START); |
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} |
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void onClockStop() { |
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// Send MIDI_STOP to external gear
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Serial1.write(MIDI_STOP); |
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} |
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void setup() { |
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// Initialize Serial1 communication at 31250 bits per second, the default MIDI Serial1 speed communication:
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Serial1.begin(31250); |
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// An led to display BPM
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pinMode(LED_BUILTIN, OUTPUT); |
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// Setup our clock system
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// Inits the clock
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uClock.init(); |
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// Set the callback function for the clock output to send MIDI Sync message.
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uClock.setClock96PPQNOutput(ClockOut96PPQN); |
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// Set the callback function for MIDI Start and Stop messages.
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uClock.setOnClockStartOutput(onClockStart);
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uClock.setOnClockStopOutput(onClockStop); |
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// Set the clock BPM to 126 BPM
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uClock.setTempo(120); |
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// Starts the clock, tick-tac-tick-tac...
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uClock.start(); |
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} |
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// Do it whatever to interface with Clock.stop(), Clock.start(), Clock.setTempo() and integrate your environment...
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void loop() { |
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} |
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@ -0,0 +1,19 @@ |
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// To give your project a unique name, this code must be
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// placed into a .c file (its own tab). It can not be in
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// a .cpp file or your main sketch (the .ino file).
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#include "usb_names.h" |
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// Edit these lines to create your own name. The length must
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// match the number of characters in your custom name.
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#define MIDI_NAME {'u','c','l','o','c','k','_','1'} |
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#define MIDI_NAME_LEN 8 |
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// Do not change this part. This exact format is required by USB.
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struct usb_string_descriptor_struct usb_string_product_name = { |
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2 + MIDI_NAME_LEN * 2, |
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3, |
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MIDI_NAME |
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}; |
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@ -0,0 +1,19 @@ |
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// To give your project a unique name, this code must be
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// placed into a .c file (its own tab). It can not be in
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// a .cpp file or your main sketch (the .ino file).
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#include "usb_names.h" |
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// Edit these lines to create your own name. The length must
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// match the number of characters in your custom name.
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#define MIDI_NAME {'u','c','l','o','c','k','_','1'} |
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#define MIDI_NAME_LEN 8 |
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// Do not change this part. This exact format is required by USB.
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struct usb_string_descriptor_struct usb_string_product_name = { |
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2 + MIDI_NAME_LEN * 2, |
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3, |
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MIDI_NAME |
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}; |
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@ -0,0 +1,19 @@ |
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// To give your project a unique name, this code must be
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// placed into a .c file (its own tab). It can not be in
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// a .cpp file or your main sketch (the .ino file).
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#include "usb_names.h" |
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// Edit these lines to create your own name. The length must
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// match the number of characters in your custom name.
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#define MIDI_NAME {'u','c','l','o','c','k','_','1'} |
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#define MIDI_NAME_LEN 8 |
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// Do not change this part. This exact format is required by USB.
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struct usb_string_descriptor_struct usb_string_product_name = { |
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2 + MIDI_NAME_LEN * 2, |
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3, |
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MIDI_NAME |
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}; |
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@ -1,10 +1,10 @@ |
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name=uClock |
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version=1.2.0 |
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version=1.3.0 |
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author=Romulo Silva <contact@midilab.co> |
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maintainer=Romulo Silva <contact@midilab.co> |
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sentence=BPM clock generator for Arduino platform. |
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paragraph=A Library to implement BPM clock tick calls using hardware interruption. Supported and tested on AVR boards(ATmega168/328, ATmega16u4/32u4 and ATmega2560) and ARM boards(Teensy, Seedstudio XIAO M0 and ESP32) |
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paragraph=A Library to implement BPM clock tick calls using hardware interruption. Supported and tested on AVR boards(ATmega168/328, ATmega16u4/32u4 and ATmega2560) and ARM boards(Teensy, Seedstudio XIAO M0. ESP32 and STM32) |
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category=Timing |
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url=https://github.com/midilab/uClock |
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architectures=avr,arm,samd,esp32 |
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architectures=avr,arm,samd,stm32,esp32 |
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includes=uClock.h |
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@ -0,0 +1,62 @@ |
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#include <Arduino.h> |
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#define ATOMIC(X) noInterrupts(); X; interrupts(); |
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// want a different avr clock support?
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// TODO: we should do this using macro guards for avrs different clocks freqeuncy setup at compile time
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#define AVR_CLOCK_FREQ 16000000 |
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void initTimer(uint32_t init_clock) |
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{ |
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ATOMIC( |
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// 16bits Timer1 init
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// begin at 120bpm (48.0007680122882 Hz)
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TCCR1A = 0; // set entire TCCR1A register to 0
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TCCR1B = 0; // same for TCCR1B
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TCNT1 = 0; // initialize counter value to 0
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// set compare match register for 48.0007680122882 Hz increments
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OCR1A = 41665; // = 16000000 / (8 * 48.0007680122882) - 1 (must be <65536)
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// turn on CTC mode
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TCCR1B |= (1 << WGM12); |
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// Set CS12, CS11 and CS10 bits for 8 prescaler
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TCCR1B |= (0 << CS12) | (1 << CS11) | (0 << CS10); |
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// enable timer compare interrupt
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TIMSK1 |= (1 << OCIE1A); |
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) |
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} |
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void setTimer(uint32_t us_interval) |
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{ |
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float tick_hertz_interval = 1/((float)us_interval/1000000); |
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uint32_t ocr; |
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uint8_t tccr = 0; |
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// 16bits avr timer setup
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if ((ocr = AVR_CLOCK_FREQ / ( tick_hertz_interval * 1 )) < 65535) { |
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// Set CS12, CS11 and CS10 bits for 1 prescaler
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tccr |= (0 << CS12) | (0 << CS11) | (1 << CS10); |
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} else if ((ocr = AVR_CLOCK_FREQ / ( tick_hertz_interval * 8 )) < 65535) { |
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// Set CS12, CS11 and CS10 bits for 8 prescaler
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tccr |= (0 << CS12) | (1 << CS11) | (0 << CS10); |
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} else if ((ocr = AVR_CLOCK_FREQ / ( tick_hertz_interval * 64 )) < 65535) { |
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// Set CS12, CS11 and CS10 bits for 64 prescaler
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tccr |= (0 << CS12) | (1 << CS11) | (1 << CS10); |
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} else if ((ocr = AVR_CLOCK_FREQ / ( tick_hertz_interval * 256 )) < 65535) { |
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// Set CS12, CS11 and CS10 bits for 256 prescaler
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tccr |= (1 << CS12) | (0 << CS11) | (0 << CS10); |
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} else if ((ocr = AVR_CLOCK_FREQ / ( tick_hertz_interval * 1024 )) < 65535) { |
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// Set CS12, CS11 and CS10 bits for 1024 prescaler
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tccr |= (1 << CS12) | (0 << CS11) | (1 << CS10); |
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} else { |
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// tempo not achiavable
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return; |
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} |
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ATOMIC( |
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TCCR1B = 0; |
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OCR1A = ocr-1; |
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TCCR1B |= (1 << WGM12); |
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TCCR1B |= tccr; |
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) |
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} |
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@ -0,0 +1,29 @@ |
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#include <Arduino.h> |
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#define TIMER_ID 0 |
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hw_timer_t * _uclockTimer = NULL; |
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portMUX_TYPE _uclockTimerMux = portMUX_INITIALIZER_UNLOCKED; |
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#define ATOMIC(X) portENTER_CRITICAL_ISR(&_uclockTimerMux); X; portEXIT_CRITICAL_ISR(&_uclockTimerMux); |
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// forward declaration of ISR
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void ARDUINO_ISR_ATTR uclockISR(); |
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void initTimer(uint32_t init_clock) |
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{ |
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_uclockTimer = timerBegin(TIMER_ID, 80, true); |
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// attach to generic uclock ISR
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timerAttachInterrupt(_uclockTimer, &uclockISR, true); |
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// init clock tick time
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timerAlarmWrite(_uclockTimer, init_clock, true);
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// activate it!
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timerAlarmEnable(_uclockTimer); |
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} |
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void setTimer(uint32_t us_interval) |
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{ |
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timerAlarmWrite(_uclockTimer, us_interval, true);
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} |
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#include <Arduino.h> |
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// 24 bits timer
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#include <TimerTCC0.h> |
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// uses TimerTcc0
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// 16 bits timer
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//#include <TimerTC3.h>
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// uses TimerTc3
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#define ATOMIC(X) noInterrupts(); X; interrupts(); |
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IntervalTimer _uclockTimer; |
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// forward declaration of ISR
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void uclockISR(); |
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void initTimer(uint32_t init_clock) |
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{ |
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TimerTcc0.initialize(init_clock); |
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// attach to generic uclock ISR
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TimerTcc0.attachInterrupt(uclockISR); |
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} |
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void setTimer(uint32_t us_interval) |
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{ |
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TimerTcc0.setPeriod(us_interval); |
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} |
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#include <Arduino.h> |
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#if !defined(STM32_CORE_VERSION) || (STM32_CORE_VERSION < 0x01090000) |
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#error "Due to API change, this library is compatible with STM32_CORE_VERSION >= 0x01090000. Please update/install stm32duino core." |
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#endif |
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#if defined(TIM1) |
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TIM_TypeDef * TimerInstance = TIM1; |
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#else |
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TIM_TypeDef * TimerInstance = TIM2; |
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#endif |
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// instantiate HardwareTimer object
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HardwareTimer * _uclockTimer = new HardwareTimer(TimerInstance); |
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#define ATOMIC(X) noInterrupts(); X; interrupts(); |
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// forward declaration of ISR
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void uclockISR(); |
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void initTimer(uint32_t us_interval) |
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{ |
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_uclockTimer->setOverflow(us_interval, MICROSEC_FORMAT); |
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_uclockTimer->attachInterrupt(uclockISR); |
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_uclockTimer->resume(); |
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} |
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void setTimer(uint32_t us_interval) |
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{ |
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_uclockTimer->setOverflow(us_interval, MICROSEC_FORMAT); |
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_uclockTimer->refresh(); |
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} |
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#include <Arduino.h> |
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#define ATOMIC(X) noInterrupts(); X; interrupts(); |
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IntervalTimer _uclockTimer; |
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// forward declaration of ISR
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void uclockISR(); |
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void initTimer(uint32_t init_clock) |
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{ |
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_uclockTimer.begin(uclockISR, init_clock);
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// Set the interrupt priority level, controlling which other interrupts
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// this timer is allowed to interrupt. Lower numbers are higher priority,
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// with 0 the highest and 255 the lowest. Most other interrupts default to 128.
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// As a general guideline, interrupt routines that run longer should be given
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// lower priority (higher numerical values).
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_uclockTimer.priority(80); |
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} |
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void setTimer(uint32_t us_interval) |
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{ |
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_uclockTimer.update(us_interval); |
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} |
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