Kenji Arai
/
TYBLE16_simple_data_logger
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Dependencies: mbed-os_TYBLE16 BME280_SPI RX8025NB nRF51_Vdd MB85RSxx_SPI
Revision 9:8c9e6e270b67, committed 2019-12-22
- Comitter:
- kenjiArai
- Date:
- Sun Dec 22 06:33:18 2019 +0000
- Parent:
- 8:7e42f8dc42a2
- Commit message:
- reduce current consumption
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Fri Dec 20 01:19:40 2019 +0000
+++ b/main.cpp Sun Dec 22 06:33:18 2019 +0000
@@ -5,7 +5,7 @@
* http://www.page.sannet.ne.jp/kenjia/index.html
* https://os.mbed.com/users/kenjiArai/
* Created: December 14th, 2019
- * Revised: December 20th, 2019
+ * Revised: December 22nd, 2019
*/
// Include --------------------------------------------------------------------
@@ -25,6 +25,8 @@
// Constructor ----------------------------------------------------------------
DigitalOut bme280_pwr(D9, 1); // BME280 sensor power on
DigitalOut fram_pwr(D5, 1); // FRAM power on
+DigitalInOut x0(I2C_SDA, PIN_OUTPUT, PullUp, 1); // I2C for dummy
+DigitalInOut x1(I2C_SCL, PIN_OUTPUT, PullUp, 1); // I2C for dummy
InterruptIn rtc_irq(P0_2, PullUp);
Serial pc(USBTX, USBRX);
nRF51_Vdd vdd(3.6f, 1.6f, ONLY4VDD);
@@ -49,6 +51,7 @@
// Function prototypes --------------------------------------------------------
static void rtc_interrupt(void);
static void goto_standby(void);
+static void priparation_for_sleep(void);
time_t w_check_rtc_time(RX8025 &ex_rtc);
//------------------------------------------------------------------------------
@@ -59,7 +62,7 @@
char buf[64]; // data buffer for text
time_t seconds;
- ThisThread::sleep_for(20);
+ // open message
pc.puts(opngmsg0);
pc.puts(opngmsg1);
// Check TYBLE-16 configuration
@@ -87,7 +90,7 @@
}
// RX8025
RX8025 ex_rtc(I2C_SDA, I2C_SCL); // RTC(RX8025) (Fixed address)
- ThisThread::sleep_for(100);
+ ThisThread::sleep_for(20);
ex_rtc.clear_alarmD_INTA();
w_check_rtc_time(ex_rtc);
int32_t count = 3;
@@ -125,6 +128,22 @@
// FRAM & BME280 power off
bme280_pwr = 0;
fram_pwr = 0;
+ priparation_for_sleep();
+ // Enter sleep mode
+ ThisThread::sleep_for((sleeping_time) * 60 * 1000 + 10000);
+ system_reset();
+#else
+ // FRAM & BME280 power off
+ bme280_pwr = 0;
+ fram_pwr = 0;
+ priparation_for_sleep();
+ ThisThread::sleep_for(8000);
+ system_reset();
+#endif
+}
+
+void priparation_for_sleep(void)
+{
// SPI output keeps low
DigitalOut p0(SPIS_PSELMOSI, 0);
DigitalOut p1(SPIS_PSELSCK, 0);
@@ -133,25 +152,16 @@
// SPI MISO sets pulldown
DigitalIn p4(SPIS_PSELMISO, PullDown);
// Periperal power off
- NRF_UART0->ENABLE = 0;
- NRF_UART0->POWER = 0;
- NRF_TWI1->ENABLE = 0;
- NRF_TWI1->POWER = 0;
- NRF_SPI0->ENABLE = 0;
- NRF_SPI0->POWER = 0;
- NRF_SPIS1->ENABLE = 0;
- NRF_SPIS1->POWER = 0;
- NRF_ADC->ENABLE = 0;
- NRF_ADC->POWER = 0;
- // Enter sleep mode
- ThisThread::sleep_for((sleeping_time) * 60 * 1000 + 10000);
- system_reset();
-#else
- bme280_pwr = 0;
- fram_pwr = 0;
- ThisThread::sleep_for(8000);
- system_reset();
-#endif
+ NRF_UART0->ENABLE = 0;
+ NRF_UART0->POWER = 0;
+ NRF_TWI1->ENABLE = 0;
+ NRF_TWI1->POWER = 0;
+ NRF_SPI0->ENABLE = 0;
+ NRF_SPI0->POWER = 0;
+ NRF_SPIS1->ENABLE = 0;
+ NRF_SPIS1->POWER = 0;
+ NRF_ADC->ENABLE = 0;
+ NRF_ADC->POWER = 0;
}
void rtc_interrupt(void)