Kenji Arai
Read nRF51822(BLE Chip) VDD voltage and return 100 to 0% charging level
Dependents: BLE_Temp_Vdd_via_UART_TY BLE_EddystoneBeacon_w_ACC_TY51822 BLE_LoopbackUART_low_pwr_w_RTC1 BLE_Paired_Server ... more
This is only for nRF51822.
You don't need any hardware circuit. Just read internal Vdd voltage using ADC function inside of the chip.
Revision 3:faf2e448c15b, committed 2018-04-14
- Comitter:
- kenjiArai
- Date:
- Sat Apr 14 04:55:32 2018 +0000
- Parent:
- 2:9b1e219a7695
- Commit message:
- small modification
Changed in this revision
diff -r 9b1e219a7695 -r faf2e448c15b nRF51_Vdd.cpp
--- a/nRF51_Vdd.cpp Sun May 29 00:54:11 2016 +0000
+++ b/nRF51_Vdd.cpp Sat Apr 14 04:55:32 2018 +0000
@@ -3,11 +3,11 @@
* Read nRF51822 VDD volatage and return 100 to 0% charging level
* https://www.nordicsemi.com/eng/Products/Bluetooth-Smart-Bluetooth-low-energy/nRF51822
*
- * Copyright (c) 2016 Kenji Arai / JH1PJL
+ * Copyright (c) 2016,'18 Kenji Arai / JH1PJL
* http://www.page.sannet.ne.jp/kenjia/index.html
- * http://mbed.org/users/kenjiArai/
+ * https://os.mbed.com/users/kenjiArai/
* Created: January 23rd, 2016
- * Revised: May 29th, 2016
+ * Revised: April 14th, 2018
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
@@ -71,7 +71,7 @@
NRF_ADC->POWER = 0;
nrf_delay_us(5);
}
- return ((float)wrk / 1024 * 1.2 * 3.0);
+ return ((float)wrk / 1024.0f * 1.2f * 3.0f);
}
uint8_t nRF51_Vdd::read(void){
diff -r 9b1e219a7695 -r faf2e448c15b nRF51_Vdd.h --- a/nRF51_Vdd.h Sun May 29 00:54:11 2016 +0000 +++ b/nRF51_Vdd.h Sat Apr 14 04:55:32 2018 +0000 @@ -3,11 +3,11 @@ * Read nRF51822 VDD volatage and return 100 to 0% charging level * https://www.nordicsemi.com/eng/Products/Bluetooth-Smart-Bluetooth-low-energy/nRF51822 * - * Copyright (c) 2016 Kenji Arai / JH1PJL + * Copyright (c) 2016,'18 Kenji Arai / JH1PJL * http://www.page.sannet.ne.jp/kenjia/index.html - * http://mbed.org/users/kenjiArai/ + * https://os.mbed.com/users/kenjiArai/ * Created: January 23rd, 2016 - * Revised: May 29th, 2016 + * Revised: April 14th, 2018 * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
diff -r 9b1e219a7695 -r faf2e448c15b nRF51_WakeUp.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/nRF51_WakeUp.lib Sat Apr 14 04:55:32 2018 +0000 @@ -0,0 +1,1 @@ +https://developer.mbed.org/users/kenjiArai/code/nRF51_WakeUp/#cc54cd1df555