Valentin Capaldi / Mbed 2 deprecated Accel_and_Gyro_BLE_eMD5

First test with Seeed Tiny BLE streaming realtime data over BLE and USB Serial. This program is based in the "Tiny BLE Getting started" using the eMotion Driver 5.12 pulling the sensor values from the DMP.

Dependencies:   BLE_API eMPL_MPU6050 mbed nRF51822

battery.h@5:ab49c12aab25, 2018-09-20 (annotated)

Committer:
valecapaldi
Date:
Thu Sep 20 13:56:49 2018 +0000
Revision:
5:ab49c12aab25
Parent:
0:26da608265f8 
First test with Seeed Tiny BLE streaming realtime data over BLE and USB Serial.; This program is based in the "Tiny BLE Getting started" using the eMotion Driver 5.12 pulling the sensor values from the DMP.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 0:26da608265f8 1
yihui 0:26da608265f8 2
yihui 0:26da608265f8 3 #ifndef __BATTERY_H__
yihui 0:26da608265f8 4 #define __BATTERY_H__
yihui 0:26da608265f8 5
yihui 0:26da608265f8 6 #include "mbed.h"
yihui 0:26da608265f8 7
yihui 0:26da608265f8 8 class Battery {
yihui 0:26da608265f8 9 public:
yihui 0:26da608265f8 10 Battery(PinName pin) {
yihui 0:26da608265f8 11 uint32_t n = (uint32_t) pin;
yihui 0:26da608265f8 12 channel = 1 << (1 + n);
yihui 0:26da608265f8 13 }
yihui 0:26da608265f8 14
yihui 0:26da608265f8 15 float read() {
yihui 0:26da608265f8 16 uint32_t pre_enable_register = NRF_ADC->ENABLE;
yihui 0:26da608265f8 17 uint32_t pre_config_register = NRF_ADC->CONFIG;
yihui 0:26da608265f8 18
yihui 0:26da608265f8 19
yihui 0:26da608265f8 20 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;
yihui 0:26da608265f8 21 NRF_ADC->CONFIG = (ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos) |
yihui 0:26da608265f8 22 (ADC_CONFIG_INPSEL_AnalogInputNoPrescaling << ADC_CONFIG_INPSEL_Pos) |
yihui 0:26da608265f8 23 (ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) |
yihui 0:26da608265f8 24 (channel << ADC_CONFIG_PSEL_Pos) |
yihui 0:26da608265f8 25 (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos);
yihui 0:26da608265f8 26
yihui 0:26da608265f8 27 NRF_ADC->TASKS_START = 1;
yihui 0:26da608265f8 28 while (((NRF_ADC->BUSY & ADC_BUSY_BUSY_Msk) >> ADC_BUSY_BUSY_Pos) == ADC_BUSY_BUSY_Busy) {
yihui 0:26da608265f8 29 }
yihui 0:26da608265f8 30
yihui 0:26da608265f8 31 uint16_t value = NRF_ADC->RESULT;
yihui 0:26da608265f8 32
yihui 0:26da608265f8 33 NRF_ADC->ENABLE = pre_enable_register;
yihui 0:26da608265f8 34 NRF_ADC->CONFIG = pre_config_register;
yihui 0:26da608265f8 35
yihui 0:26da608265f8 36 return (float)value * (1.0f / (float)0x3FF) * 1.2 * 12.2 / 2.2;
yihui 0:26da608265f8 37 }
yihui 0:26da608265f8 38
yihui 0:26da608265f8 39 private:
yihui 0:26da608265f8 40 uint32_t channel;
yihui 0:26da608265f8 41 };
yihui 0:26da608265f8 42
yihui 0:26da608265f8 43 #endif // __BATTERY_H__