read_vsys sample
Select one of the symbols to view example projects that use it.
 
Outline
#include <stdio.h>
#include <pico/stdlib.h>
#include <power_status.h>
#include "hardware/adc.h"
#include "pico/float.h"
#include "pico/cyw43_arch.h"
main()
Files
loading...
SourceVuRaspberry Pi Pico SDK and Examplesread_vsys sampleread_vsys.c
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/** * Copyright (c) 2022 Raspberry Pi (Trading) Ltd. * * SPDX-License-Identifier: BSD-3-Clause *//* ... */ #include <stdio.h> #include <pico/stdlib.h> #include <power_status.h> #include "hardware/adc.h" #include "pico/float.h" 5 includes #if CYW43_USES_VSYS_PIN #include "pico/cyw43_arch.h" #endif int main() { stdio_init_all(); adc_init(); adc_set_temp_sensor_enabled(true); // Pico W uses a CYW43 pin to get VBUS so we need to initialise it #if CYW43_USES_VSYS_PIN if (cyw43_arch_init()) { printf("failed to initialise\n"); return 1; }if (cyw43_arch_init()) { ... } /* ... */ #endif bool old_battery_status = false; bool battery_status = true; float old_voltage = -1; char *power_str = "UNKNOWN"; while(true) { // Get battery status if (power_source(&battery_status) == PICO_OK) { power_str = battery_status ? "BATTERY" : "POWERED"; }if (power_source(&battery_status) == PICO_OK) { ... } // Get voltage float voltage = 0; int voltage_return = power_voltage(&voltage); voltage = floorf(voltage * 100) / 100; // Display power if it's changed if (old_battery_status != battery_status || old_voltage != voltage) { char percent_buf[10] = {0}; if (battery_status && voltage_return == PICO_OK) { const float min_battery_volts = 3.0f; const float max_battery_volts = 4.2f; int percent_val = (int) (((voltage - min_battery_volts) / (max_battery_volts - min_battery_volts)) * 100); snprintf(percent_buf, sizeof(percent_buf), " (%d%%)", percent_val); }if (battery_status && voltage_return == PICO_OK) { ... } // Also get the temperature adc_select_input(4); const float conversionFactor = 3.3f / (1 << 12); float adc = (float)adc_read() * conversionFactor; float tempC = 27.0f - (adc - 0.706f) / 0.001721f; // Display power and remember old vales printf("Power %s, %.2fV%s, temp %.1f DegC\n", power_str, voltage, percent_buf, tempC); old_battery_status = battery_status; old_voltage = voltage; }if (old_battery_status != battery_status || old_voltage != voltage) { ... } sleep_ms(1000); }while (true) { ... } #if CYW43_USES_VSYS_PIN cyw43_arch_deinit(); #endif return 0; }{ ... }
Details
Show:
from
Types: Columns: