Example description
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# pwm_led_fade.eww
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# $Revision: 32 $
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DESCRIPTION
===========
This example project shows how to use the IAR Embedded Workbench for ARM to
develop and debug a code for Raspberry Pi RP2040. The source code of the example
is part of the Raspberry Pi Pico SDK Examples pack and uses Pico SDK version 1.3.0.
The application fades a LED between low and high brightness. An interrupt handler
updates the PWM slice's output level each time the counter wraps.
This project includes a second stage bootloader with the following supported
devices: W25Q080, W25Q16JV, AT25SF081, S25FL132K0
The required checksum is automatically generated and added at the end of the
bootloader area during the linking process.
Debugger wiring connections
---------------------------
The table below considers the ARM20 connector.
| ARM20 | RPi Pico |
| header | board pad |
| ---------- | ---------- |
| 1 | 3V3 |
| 4 | GND |
| 7 | SWDIO |
| 9 | SWCLK |
The table below considers the MIPI10/20 connector.
| MIPI10/20 | RPi Pico |
| header | board pad |
| ---------- | ---------- |
| 1 | 3V3 |
| 3 | GND |
| 2 | SWDIO |
| 4 | SWCLK |
More information at: https://developer.arm.com/documentation/ka001776/latest
NOTE:
-----
The example project uses an experimental and partial port of Pico SDK for the
IAR compiler!
Pico SDK and Pico SDK Examples are distributed under the following licenses:
https://github.com/raspberrypi/pico-sdk/blob/master/LICENSE.TXT
https://github.com/raspberrypi/pico-examples/blob/master/LICENSE.TXT
For the complete Pico SDK:
https://github.com/raspberrypi/pico-sdk
For the complete Pico SDK examples:
https://github.com/raspberrypi/pico-examples
COMPATIBILITY
=============
By default, the pwm_led_fade application is configured to run on Raspberry Pi
Pico board and uses I-Jet debug probe.
CONFIGURATIONS
===============
Flash Debug:
Configuration intended for debugging in the QSPI flash memory.
GETTING STARTED
===============
1) Connect the I-Jet probe to the Raspberry Pi Pico board using "Debugger
wiring connections" notes in the Description section above.
2) Start a debug session using the "Download and debug" option. This will
download the example into the QSPI flash memory.
3) Run the example.