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Releases v1.0.0 to support RP2040-based boards

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### Initial Releases v1.0.0

1. Initial coding to support RP2040-based boards such as RASPBERRY_PI_PICO. etc. using [Earle Philhower's arduino-pico core](https://github.com/earlephilhower/arduino-pico)
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Khoi Hoang
2021-05-11 21:07:02 -04:00
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* [ 6. RPM_Measure](examples/RPM_Measure)
* [ 7. SwitchDebounce](examples/SwitchDebounce)
* [ 8. TimerInterruptTest](examples/TimerInterruptTest)
* [Example ISR_Timers_Array_Simple](#example-isr_timer_array_simple)
* [Example ISR_Timers_Array_Simple](#example-isr_timers_array_simple)
* [Debug Terminal Output Samples](#debug-terminal-output-samples)
* [1. ISR_Timers_Array_Simple on RASPBERRY_PI_PICO](#1-isr_timers_array_simple-on-raspberry_pi_pico)
* [2. TimerInterruptTest on RASPBERRY_PI_PICO](#2-timerinterrupttest-on-raspberry_pi_pico)
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## Features
This library enables you to use Interrupt from Hardware Timers on on RP2040-based boards such as RASPBERRY_PI_PICO, using [Earle Philhower's arduino-pico core](https://github.com/earlephilhower/arduino-pico). Support to [**Arduino-mbed RP2040** core](https://github.com/arduino/ArduinoCore-mbed) will be added in future releases.
This library enables you to use Interrupt from Hardware Timers on on RP2040-based boards such as RASPBERRY_PI_PICO, using [**Earle Philhower's arduino-pico** core](https://github.com/earlephilhower/arduino-pico). Support to [**Arduino-mbed RP2040** core](https://github.com/arduino/ArduinoCore-mbed) will be added in future releases.
As **Hardware Timers are rare, and very precious assets** of any board, this library now enables you to use up to **16 ISR-based Timers, while consuming only 1 Hardware Timer**. Timers' interval is very long (**ulong millisecs**).
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### Currently supported Boards
1. RP2040-based boards such as RASPBERRY_PI_PICO, ADAFRUIT_FEATHER_RP2040 and GENERIC_RP2040, etc.
1. RP2040-based boards such as **RASPBERRY_PI_PICO, ADAFRUIT_FEATHER_RP2040 and GENERIC_RP2040**, etc.
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@@ -124,7 +124,7 @@ The catch is **your function is now part of an ISR (Interrupt Service Routine),
### Initial Releases v1.0.0
1. Initial coding to support RP2040-based boards such as RASPBERRY_PI_PICO. etc. using [Earle Philhower's arduino-pico core](https://github.com/earlephilhower/arduino-pico)
1. Initial coding to support RP2040-based boards such as **RASPBERRY_PI_PICO**, etc. using [**Earle Philhower's arduino-pico** core](https://github.com/earlephilhower/arduino-pico)
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@@ -195,7 +195,7 @@ To re-use the **new h-only** way, just
The RPI_PICO system timer peripheral provides a global microsecond timebase for the system, and generates interrupts based on this timebase. It supports the following features:
• A single 64-bit counter, incrementing once per microsecond
• This counter can be read from a pair of latching registers, for race-free reads over a 32-bit bus.
• Four alarms: match on the lower 32 bits of counter, IRQ on match: TIMER_IRQ_0-TIMER_IRQ_3
• Four alarms: match on the lower 32 bits of counter, IRQ on match: **TIMER_IRQ_0-TIMER_IRQ_3**
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## Usage
Before using any Timer, you have to make sure the Timer has not been used by any other purpose.
`Timer0, Timer1, Timer2 and Timer3` are supported for RP2040-based boards.
`TIMER_IRQ_0, TIMER_IRQ_1, TIMER_IRQ_2 and TIMER_IRQ_3` are supported for RP2040-based boards.
### 1. Using only Hardware Timer directly
@@ -759,7 +759,7 @@ Sometimes, the library will only work if you update the board core to the latest
### Initial Releases v1.0.0
1. Initial coding to support RP2040-based boards such as RASPBERRY_PI_PICO. etc. using [Earle Philhower's arduino-pico core](https://github.com/earlephilhower/arduino-pico)
1. Initial coding to support **RP2040-based boards such as RASPBERRY_PI_PICO**, etc. using [**Earle Philhower's arduino-pico** core](https://github.com/earlephilhower/arduino-pico)
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## DONE
1. Basic hardware timers for **RP2040-based boards such as RASPBERRY_PI_PICO**, using [Earle Philhower's arduino-pico core](https://github.com/earlephilhower/arduino-pico)
1. Basic hardware timers for **RP2040-based boards such as RASPBERRY_PI_PICO**, using [**Earle Philhower's arduino-pico** core](https://github.com/earlephilhower/arduino-pico)
2. More hardware-initiated software-enabled timers
3. Longer time interval
4. Add Version String