Kenji Arai / nRF51_LowPwr

Enter Low Power mode not to use sd_power_system_off() subroutine

Dependents:   BLE_EddystoneBeacon_w_ACC_TY51822 BLE_LoopbackUART_low_pwr_w_RTC1 BLE_Paired_Server BLE_Paired_Client

nRF51_lowpwr.cpp@0:9ddf14df689c, 2016-06-01 (annotated)

Committer:
kenjiArai
Date:
Wed Jun 01 10:55:02 2016 +0000
Revision:
0:9ddf14df689c
Child:
1:4c3f4f1e154e
Enter low power mode

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kenjiArai 0:9ddf14df689c 1 /*
kenjiArai 0:9ddf14df689c 2 * mbed library program
kenjiArai 0:9ddf14df689c 3 * Set low power condition only for nRF51822 BLE chip
kenjiArai 0:9ddf14df689c 4 *
kenjiArai 0:9ddf14df689c 5 * Copyright (c) 2016 Kenji Arai / JH1PJL
kenjiArai 0:9ddf14df689c 6 * http://www.page.sannet.ne.jp/kenjia/index.html
kenjiArai 0:9ddf14df689c 7 * http://mbed.org/users/kenjiArai/
kenjiArai 0:9ddf14df689c 8 * Started: April 30th, 2016
kenjiArai 0:9ddf14df689c 9 * Revised: June 1st, 2016
kenjiArai 0:9ddf14df689c 10 *
kenjiArai 0:9ddf14df689c 11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
kenjiArai 0:9ddf14df689c 12 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
kenjiArai 0:9ddf14df689c 13 * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
kenjiArai 0:9ddf14df689c 14 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
kenjiArai 0:9ddf14df689c 15 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
kenjiArai 0:9ddf14df689c 16 */
kenjiArai 0:9ddf14df689c 17
kenjiArai 0:9ddf14df689c 18 #include "mbed.h"
kenjiArai 0:9ddf14df689c 19 #include "nRF51_lowpwr.h"
kenjiArai 0:9ddf14df689c 20 #include "nrf_delay.h"
kenjiArai 0:9ddf14df689c 21
kenjiArai 0:9ddf14df689c 22 LowPwr::LowPwr(const nRF51_LOWPWR_TypeDef *param){
kenjiArai 0:9ddf14df689c 23 if (!((param->std_printf_function == false) || (param->serial_function == true))){
kenjiArai 0:9ddf14df689c 24 //#warning "Disable Serial function (cannot use printf)!"
kenjiArai 0:9ddf14df689c 25 NRF_UART0->ENABLE = 0;
kenjiArai 0:9ddf14df689c 26 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 27 NRF_UART0->EVENTS_RXDRDY = 0;
kenjiArai 0:9ddf14df689c 28 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 29 //NRF_UART0->INTENCLR = 0x00020287;
kenjiArai 0:9ddf14df689c 30 NRF_UART0->INTENCLR = 0xffffffff;
kenjiArai 0:9ddf14df689c 31 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 32 NRF_UART0->TASKS_STOPRX = 1;
kenjiArai 0:9ddf14df689c 33 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 34 NRF_UART0->POWER = 0;
kenjiArai 0:9ddf14df689c 35 }
kenjiArai 0:9ddf14df689c 36 if (param->i2c_function == false){
kenjiArai 0:9ddf14df689c 37 //#warning "Disable I2C function!"
kenjiArai 0:9ddf14df689c 38 NRF_TWI0->EVENTS_ERROR = 0;
kenjiArai 0:9ddf14df689c 39 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 40 NRF_TWI0->INTENCLR = 0xffffffff;
kenjiArai 0:9ddf14df689c 41 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 42 NRF_TWI0->ENABLE = 0;
kenjiArai 0:9ddf14df689c 43 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 44 NRF_TWI0->POWER = 0;
kenjiArai 0:9ddf14df689c 45 NRF_TWI1->EVENTS_ERROR = 0;
kenjiArai 0:9ddf14df689c 46 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 47 NRF_TWI0->INTENCLR = 0xffffffff;
kenjiArai 0:9ddf14df689c 48 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 49 NRF_TWI1->ENABLE = 0;
kenjiArai 0:9ddf14df689c 50 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 51 NRF_TWI1->POWER = 0;
kenjiArai 0:9ddf14df689c 52 }
kenjiArai 0:9ddf14df689c 53 if (!((param->spi_function == false) || (param->spi_slave_function == true))){
kenjiArai 0:9ddf14df689c 54 //#warning "Disable SPI function!"
kenjiArai 0:9ddf14df689c 55 NRF_SPI0->INTENCLR = 0xffffffff;
kenjiArai 0:9ddf14df689c 56 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 57 NRF_SPI0->ENABLE = 0;
kenjiArai 0:9ddf14df689c 58 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 59 NRF_SPI0->POWER = 0;
kenjiArai 0:9ddf14df689c 60 NRF_SPI1->INTENCLR = 0xffffffff;
kenjiArai 0:9ddf14df689c 61 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 62 NRF_SPI1->ENABLE = 0;
kenjiArai 0:9ddf14df689c 63 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 64 NRF_SPI1->POWER = 0;
kenjiArai 0:9ddf14df689c 65 NRF_SPIS1->INTENCLR = 0xffffffff;
kenjiArai 0:9ddf14df689c 66 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 67 NRF_SPIS1->ENABLE = 0;
kenjiArai 0:9ddf14df689c 68 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 69 NRF_SPIS1->POWER = 0;
kenjiArai 0:9ddf14df689c 70 }
kenjiArai 0:9ddf14df689c 71 if (param->pwm_functions == false){
kenjiArai 0:9ddf14df689c 72 //#warning "Disable PWM function!"
kenjiArai 0:9ddf14df689c 73 // Timer0,1,2
kenjiArai 0:9ddf14df689c 74 NRF_TIMER0->INTENCLR = 0xffffffff;
kenjiArai 0:9ddf14df689c 75 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 76 NRF_TIMER0->TASKS_STOP = 1;
kenjiArai 0:9ddf14df689c 77 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 78 NRF_TIMER0->POWER = 0;
kenjiArai 0:9ddf14df689c 79 NRF_TIMER1->INTENCLR = 0xffffffff;
kenjiArai 0:9ddf14df689c 80 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 81 NRF_TIMER1->TASKS_STOP = 1;
kenjiArai 0:9ddf14df689c 82 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 83 NRF_TIMER1->POWER = 0;
kenjiArai 0:9ddf14df689c 84 NRF_TIMER2->INTENCLR = 0xffffffff;
kenjiArai 0:9ddf14df689c 85 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 86 NRF_TIMER2->TASKS_STOP = 1;
kenjiArai 0:9ddf14df689c 87 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 88 NRF_TIMER2->POWER = 0;
kenjiArai 0:9ddf14df689c 89 // PPI
kenjiArai 0:9ddf14df689c 90 NRF_PPI->TASKS_CHG[0].DIS = 1;
kenjiArai 0:9ddf14df689c 91 NRF_PPI->TASKS_CHG[1].DIS = 1;
kenjiArai 0:9ddf14df689c 92 NRF_PPI->TASKS_CHG[2].DIS = 1;
kenjiArai 0:9ddf14df689c 93 NRF_PPI->TASKS_CHG[3].DIS = 1;
kenjiArai 0:9ddf14df689c 94 for (uint8_t n = 0; n <16 ; n++){
kenjiArai 0:9ddf14df689c 95 NRF_PPI->CH[n].TEP = 0;
kenjiArai 0:9ddf14df689c 96 NRF_PPI->CH[n].EEP = 0;
kenjiArai 0:9ddf14df689c 97 }
kenjiArai 0:9ddf14df689c 98 }
kenjiArai 0:9ddf14df689c 99 if (param->analog_function == false){
kenjiArai 0:9ddf14df689c 100 //#warning "Disable ADC function!"
kenjiArai 0:9ddf14df689c 101 NRF_ADC->TASKS_STOP = 1;
kenjiArai 0:9ddf14df689c 102 NRF_ADC->CONFIG = 0x18;
kenjiArai 0:9ddf14df689c 103 NRF_ADC->ENABLE = 0;
kenjiArai 0:9ddf14df689c 104 nrf_delay_us(5);
kenjiArai 0:9ddf14df689c 105 NRF_ADC->POWER = 0;
kenjiArai 0:9ddf14df689c 106 }
kenjiArai 0:9ddf14df689c 107 }