u-blox / Mbed OS example-battery-gauge-bq35100

Example program to demonstrate the use of the BatteryGaugeBQ35100 class on a C030 board.

Dependencies:   battery-gauge-bq35100

main.cpp@1:390b13287bb7, 2017-11-10 (annotated)

Committer:
RobMeades
Date:
Fri Nov 10 17:31:58 2017 +0000
Revision:
1:390b13287bb7
Parent:
0:921ceae3cd78 
Example to go with latest BQ35100 driver code.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RobMeades 0:921ceae3cd78 1 /* mbed Microcontroller Library
RobMeades 0:921ceae3cd78 2 * Copyright (c) 2017 u-blox
RobMeades 0:921ceae3cd78 3 *
RobMeades 0:921ceae3cd78 4 * Licensed under the Apache License, Version 2.0 (the "License");
RobMeades 0:921ceae3cd78 5 * you may not use this file except in compliance with the License.
RobMeades 0:921ceae3cd78 6 * You may obtain a copy of the License at
RobMeades 0:921ceae3cd78 7 *
RobMeades 0:921ceae3cd78 8 * http://www.apache.org/licenses/LICENSE-2.0
RobMeades 0:921ceae3cd78 9 *
RobMeades 0:921ceae3cd78 10 * Unless required by applicable law or agreed to in writing, software
RobMeades 0:921ceae3cd78 11 * distributed under the License is distributed on an "AS IS" BASIS,
RobMeades 0:921ceae3cd78 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
RobMeades 0:921ceae3cd78 13 * See the License for the specific language governing permissions and
RobMeades 0:921ceae3cd78 14 * limitations under the License.
RobMeades 0:921ceae3cd78 15 */
RobMeades 0:921ceae3cd78 16
RobMeades 0:921ceae3cd78 17 #include "mbed.h"
RobMeades 0:921ceae3cd78 18 #include "battery_gauge_bq35100.h"
RobMeades 0:921ceae3cd78 19
RobMeades 0:921ceae3cd78 20 // LEDs
RobMeades 0:921ceae3cd78 21 DigitalOut ledRed(LED1, 1);
RobMeades 0:921ceae3cd78 22 DigitalOut ledGreen(LED2, 1);
RobMeades 0:921ceae3cd78 23
RobMeades 0:921ceae3cd78 24 /* This example program for the u-blox C030 primary battery
RobMeades 0:921ceae3cd78 25 * shield instantiates the BQ35100 battery gauge and performs
RobMeades 0:921ceae3cd78 26 * a few example calls to the battery gauge API. Progress may
RobMeades 0:921ceae3cd78 27 * be monitored with a serial terminal running at 9600 baud.
RobMeades 0:921ceae3cd78 28 * The LED on the C030 board will turn green when this program
RobMeades 0:921ceae3cd78 29 * is operating correctly and will turn red if there is a failure.
RobMeades 0:921ceae3cd78 30 */
RobMeades 0:921ceae3cd78 31
RobMeades 0:921ceae3cd78 32 int main()
RobMeades 0:921ceae3cd78 33 {
RobMeades 0:921ceae3cd78 34 I2C i2C(I2C_SDA, I2C_SCL);
RobMeades 0:921ceae3cd78 35 BatteryGaugeBq35100 gauge;
RobMeades 0:921ceae3cd78 36 int32_t reading;
RobMeades 1:390b13287bb7 37 uint32_t capacity;
RobMeades 0:921ceae3cd78 38 bool stop = false;
RobMeades 0:921ceae3cd78 39
RobMeades 0:921ceae3cd78 40 printf ("Starting up...\n");
RobMeades 1:390b13287bb7 41 if (gauge.init(&i2C) && gauge.setDesignCapacity(6500)) {
RobMeades 1:390b13287bb7 42 printf ("BQ35100 battery gauge chip is initialised assuming a 6500 mAh battery.\n");
RobMeades 1:390b13287bb7 43 while (!stop) {
RobMeades 1:390b13287bb7 44 if (!gauge.isGaugeEnabled()) {
RobMeades 1:390b13287bb7 45 gauge.enableGauge();
RobMeades 1:390b13287bb7 46 }
RobMeades 1:390b13287bb7 47 if (gauge.isGaugeEnabled()) {
RobMeades 1:390b13287bb7 48 // All is good, gauging is enabled, take a few readings
RobMeades 1:390b13287bb7 49 ledGreen = 0;
RobMeades 1:390b13287bb7 50 ledRed = 1;
RobMeades 1:390b13287bb7 51
RobMeades 1:390b13287bb7 52 if (gauge.getRemainingPercentage(&reading)) {
RobMeades 1:390b13287bb7 53 printf("Remaining battery percentage: %d%%.\n", (int) reading);
RobMeades 1:390b13287bb7 54 } else {
RobMeades 1:390b13287bb7 55 ledGreen = 1;
RobMeades 1:390b13287bb7 56 ledRed = 0;
RobMeades 1:390b13287bb7 57 wait_ms(1000);
RobMeades 1:390b13287bb7 58 }
RobMeades 1:390b13287bb7 59
RobMeades 1:390b13287bb7 60 if (gauge.getRemainingCapacity(&capacity)) {
RobMeades 1:390b13287bb7 61 printf("Remaining battery capacity: %.3f Ah.\n", ((float) capacity) / 1000);
RobMeades 1:390b13287bb7 62 } else {
RobMeades 1:390b13287bb7 63 ledGreen = 1;
RobMeades 1:390b13287bb7 64 ledRed = 0;
RobMeades 1:390b13287bb7 65 wait_ms(1000);
RobMeades 1:390b13287bb7 66 }
RobMeades 1:390b13287bb7 67
RobMeades 1:390b13287bb7 68 if (gauge.getVoltage(&reading)) {
RobMeades 1:390b13287bb7 69 printf("Battery voltage: %.3f V.\n", ((float) reading) / 1000);
RobMeades 1:390b13287bb7 70 } else {
RobMeades 1:390b13287bb7 71 ledGreen = 1;
RobMeades 1:390b13287bb7 72 ledRed = 0;
RobMeades 1:390b13287bb7 73 wait_ms(1000);
RobMeades 1:390b13287bb7 74 }
RobMeades 1:390b13287bb7 75
RobMeades 1:390b13287bb7 76 if (gauge.getCurrent(&reading)) {
RobMeades 1:390b13287bb7 77 printf("Current drawn from battery: %.3f A.\n", ((float) reading) / 1000);
RobMeades 1:390b13287bb7 78 } else {
RobMeades 1:390b13287bb7 79 ledGreen = 1;
RobMeades 1:390b13287bb7 80 ledRed = 0;
RobMeades 1:390b13287bb7 81 wait_ms(1000);
RobMeades 1:390b13287bb7 82 }
RobMeades 1:390b13287bb7 83
RobMeades 1:390b13287bb7 84 if (gauge.getTemperature(&reading)) {
RobMeades 1:390b13287bb7 85 printf("BQ27441 chip temperature: %d C.\n", (int) reading);
RobMeades 1:390b13287bb7 86 } else {
RobMeades 1:390b13287bb7 87 ledGreen = 1;
RobMeades 1:390b13287bb7 88 ledRed = 0;
RobMeades 1:390b13287bb7 89 wait_ms(1000);
RobMeades 1:390b13287bb7 90 }
RobMeades 1:390b13287bb7 91
RobMeades 1:390b13287bb7 92 } else {
RobMeades 1:390b13287bb7 93 printf("Battery gauging could not be enabled.\n");
RobMeades 1:390b13287bb7 94 stop = true;
RobMeades 1:390b13287bb7 95 }
RobMeades 1:390b13287bb7 96 wait_ms(5000);
RobMeades 1:390b13287bb7 97 }
RobMeades 0:921ceae3cd78 98 }
RobMeades 0:921ceae3cd78 99
RobMeades 0:921ceae3cd78 100 ledGreen = 1;
RobMeades 0:921ceae3cd78 101 ledRed = 0;
RobMeades 0:921ceae3cd78 102 printf("Should never get here.\n");
RobMeades 0:921ceae3cd78 103 MBED_ASSERT(false);
RobMeades 0:921ceae3cd78 104 }
RobMeades 0:921ceae3cd78 105
RobMeades 0:921ceae3cd78 106 // End Of File