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Updates along with SDK1.3.0 release (#181)

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Bug fixes and new examples

Co-authored-by: Paulo Marques <pm@quant-insight.com>
Co-authored-by: martin <admin@crossleys.biz>
Co-authored-by: matiasilva <matias.silva@raspberrypi.com>
Co-authored-by: Uri Shaked <uri@urishaked.com>
Co-authored-by: Diego Solano <diegosolano@gmail.com>
Co-authored-by: Andrew Scheller <andrew.scheller@raspberrypi.com>
Co-authored-by: Adrian Hesketh <a-h@users.noreply.github.com>
Co-authored-by: Emircan Gündoğdu <58917386+emircangun@users.noreply.github.com>
Co-authored-by: Josef Wegner <80200012+josefwegner@users.noreply.github.com>
Co-authored-by: pmarques-dev <72901351+pmarques-dev@users.noreply.github.com>
Co-authored-by: Paulo Marques <pm@quant-insight.com>
Co-authored-by: mjcross <mjcross@users.noreply.github.com>
Co-authored-by: martin <admin@crossleys.biz>
This commit is contained in:
Graham Sanderson
2021-11-01 14:41:54 -05:00
committed by GitHub
parent 146680d625
commit f800a7e303
150 changed files with 4832 additions and 98 deletions
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49
adc/microphone_adc/microphone_adc.c Normal file
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/**
* Copyright (c) 2021 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/gpio.h"
#include "hardware/adc.h"
#include "hardware/uart.h"
#include "pico/binary_info.h"
/* Example code to extract analog values from a microphone using the ADC
with accompanying Python file to plot these values
Connections on Raspberry Pi Pico board, other boards may vary.
GPIO 26/ADC0 (pin 31)-> AOUT or AUD on microphone board
3.3v (pin 36) -> VCC on microphone board
GND (pin 38) -> GND on microphone board
*/
#define ADC_NUM 0
#define ADC_PIN (26 + ADC_NUM)
#define ADC_VREF 3.3
#define ADC_RANGE (1 << 12)
#define ADC_CONVERT (ADC_VREF / (ADC_RANGE - 1))
int main() {
stdio_init_all();
printf("Beep boop, listening...\n");
bi_decl(bi_program_description("Analog microphone example for Raspberry Pi Pico")); // for picotool
bi_decl(bi_1pin_with_name(ADC_PIN, "ADC input pin"));
adc_init();
adc_gpio_init( ADC_PIN);
adc_select_input( ADC_NUM);
uint adc_raw;
while (1) {
adc_raw = adc_read(); // raw voltage from ADC
printf("%.2f\n", adc_raw * ADC_CONVERT);
sleep_ms(10);
}
return 0;
}