Raspberry Pi RP2040 User Manual

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#define bi_program_url(url) bi_string(BINARY_INFO_TAG_RASPBERRY_PI, BINARY_INFO_ID_RP_PROGRAM_URL,

url)

You then either use bi_decl(bi_blah(…)) for unconditional inclusion of the binary info blah, or

bi_decl_if_func_used(bi_blah(…)) for binary information that may be stripped if the enclosing function is not included in

the binary by the linker (think

--gc-sections).

For example,

Ê1 #include <stdio.h>

Ê2 #include "pico/stdlib.h"

Ê3 #include "hardware/gpio.h"

Ê4 #include "pico/binary_info.h"

Ê5

Ê6

const uint LED_PIN = 25;

Ê7

Ê8

int main() {

Ê9

10 bi_decl(bi_program_description(

"This is a test binary."));

11 bi_decl(bi_1pin_with_name(LED_PIN,

"On-board LED"));

13 setup_default_uart();

14 gpio_set_function(LED_PIN, GPIO_FUNC_PROC);

15 gpio_set_dir(LED_PIN, GPIO_OUT);

while (1) {

17 gpio_put(LED_PIN,

0);

18 sleep_ms(

250);

19 gpio_put(LED_PIN,

1);

20 puts(

"Hello World\n");

21 sleep_ms(

1000);

22 }

23 }

when queried with

picotool,

$ sudo picotool info -a test.uf2

File test.uf2:

Program Information

Êname: test

Êdescription: This is a test binary.

Êfeatures: stdout to UART

Êbinary start: 0x10000000

Êbinary end: 0x100031f8

Fixed Pin Information

Ê0: UART0 TX

Ê1: UART0 RX

Ê25: On-board LED

Build Information

Êbuild date: Jan 4 2021

shows our information strings in the output.

Getting started with Raspberry Pi Pico

Binary Information 72

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Raspberry Pi RP2040 Specifications

General

Processor	Dual-core Arm Cortex-M0+
Clock Speed	133 MHz
SRAM	264 KB
GPIO	30
USB	USB 1.1 Host/Device
PWM	16 channels
UART	2
SPI	2
I2C	2
Temperature Range	-20°C to +85°C
Operating Voltage	1.8V to 3.3V
Flash	External QSPI flash
I/O Interfaces	SPI, I2C, UART, PWM
ADC	4 × 12-bit ADC channels