Diff: nRF51_lowpwr.cpp

Revision:

0:9ddf14df689c

Child:

1:4c3f4f1e154e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nRF51_lowpwr.cpp	Wed Jun 01 10:55:02 2016 +0000
@@ -0,0 +1,107 @@
+/*
+ * mbed library program
+ *  Set low power condition only for nRF51822 BLE chip
+ *
+ *  Copyright (c) 2016 Kenji Arai / JH1PJL
+ *  http://www.page.sannet.ne.jp/kenjia/index.html
+ *  http://mbed.org/users/kenjiArai/
+ *      Started:    April     30th, 2016
+ *      Revised:    June       1st, 2016
+ *
+ * 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
+ * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "mbed.h"
+#include "nRF51_lowpwr.h"
+#include "nrf_delay.h"
+
+LowPwr::LowPwr(const nRF51_LOWPWR_TypeDef *param){
+    if (!((param->std_printf_function == false) || (param->serial_function == true))){
+        //#warning    "Disable Serial function (cannot use printf)!"
+        NRF_UART0->ENABLE           = 0;
+        nrf_delay_us(5);
+        NRF_UART0->EVENTS_RXDRDY    = 0;
+        nrf_delay_us(5);
+        //NRF_UART0->INTENCLR = 0x00020287;
+        NRF_UART0->INTENCLR         = 0xffffffff;
+        nrf_delay_us(5);
+        NRF_UART0->TASKS_STOPRX     = 1;
+        nrf_delay_us(5);
+        NRF_UART0->POWER            = 0;
+    }
+    if (param->i2c_function == false){
+        //#warning    "Disable I2C function!"
+        NRF_TWI0->EVENTS_ERROR      = 0;
+        nrf_delay_us(5);
+        NRF_TWI0->INTENCLR          = 0xffffffff;
+        nrf_delay_us(5);
+        NRF_TWI0->ENABLE            = 0;
+        nrf_delay_us(5);
+        NRF_TWI0->POWER             = 0;
+        NRF_TWI1->EVENTS_ERROR      = 0;
+        nrf_delay_us(5);
+        NRF_TWI0->INTENCLR          = 0xffffffff;
+        nrf_delay_us(5);
+        NRF_TWI1->ENABLE            = 0;
+        nrf_delay_us(5);
+        NRF_TWI1->POWER             = 0;
+    }
+    if (!((param->spi_function == false) || (param->spi_slave_function == true))){
+        //#warning    "Disable SPI function!"
+        NRF_SPI0->INTENCLR          = 0xffffffff;
+        nrf_delay_us(5);
+        NRF_SPI0->ENABLE            = 0;
+        nrf_delay_us(5);
+        NRF_SPI0->POWER             = 0;
+        NRF_SPI1->INTENCLR          = 0xffffffff;
+        nrf_delay_us(5);
+        NRF_SPI1->ENABLE            = 0;
+        nrf_delay_us(5);
+        NRF_SPI1->POWER             = 0;
+        NRF_SPIS1->INTENCLR          = 0xffffffff;
+        nrf_delay_us(5);
+        NRF_SPIS1->ENABLE            = 0;
+        nrf_delay_us(5);
+        NRF_SPIS1->POWER             = 0;
+    }
+    if (param->pwm_functions == false){
+        //#warning    "Disable PWM function!"
+        // Timer0,1,2
+        NRF_TIMER0->INTENCLR        = 0xffffffff;
+        nrf_delay_us(5);
+        NRF_TIMER0->TASKS_STOP      = 1;
+        nrf_delay_us(5);
+        NRF_TIMER0->POWER           = 0;
+        NRF_TIMER1->INTENCLR        = 0xffffffff;
+        nrf_delay_us(5);
+        NRF_TIMER1->TASKS_STOP      = 1;
+        nrf_delay_us(5);
+        NRF_TIMER1->POWER           = 0;
+        NRF_TIMER2->INTENCLR        = 0xffffffff;
+        nrf_delay_us(5);
+        NRF_TIMER2->TASKS_STOP      = 1;
+        nrf_delay_us(5);
+        NRF_TIMER2->POWER           = 0;
+        // PPI
+        NRF_PPI->TASKS_CHG[0].DIS   = 1;
+        NRF_PPI->TASKS_CHG[1].DIS   = 1;
+        NRF_PPI->TASKS_CHG[2].DIS   = 1;
+        NRF_PPI->TASKS_CHG[3].DIS   = 1;
+        for (uint8_t n = 0; n <16 ; n++){
+            NRF_PPI->CH[n].TEP = 0;
+            NRF_PPI->CH[n].EEP = 0;
+        }
+    }
+    if (param->analog_function == false){
+        //#warning    "Disable ADC function!"
+        NRF_ADC->TASKS_STOP         = 1;
+        NRF_ADC->CONFIG             = 0x18;
+        NRF_ADC->ENABLE             = 0;
+        nrf_delay_us(5);
+        NRF_ADC->POWER              = 0;
+    }
+}