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| author | Florian Baumann <derflob@derflob.de> | 2020-04-27 21:14:54 +0200 |
|---|---|---|
| committer | Florian Baumann <derflob@derflob.de> | 2020-04-27 21:14:54 +0200 |
| commit | 427560fdd8e0f0cce9b590f416c2b10856dafe1d (patch) | |
| tree | a27dc424d86dad1e126f71c45e41d3df825baf73 | |
| parent | b0efb955ab4f5566a99cd8ae53f41605e3241fe0 (diff) | |
| download | ULPSoilMonitor-427560fdd8e0f0cce9b590f416c2b10856dafe1d.tar.gz ULPSoilMonitor-427560fdd8e0f0cce9b590f416c2b10856dafe1d.tar.bz2 | |
toggle GPIO25/RTC_GPIO06 to enable moisture sensors
| -rw-r--r-- | ULPSoilMonitor.ino | 12 | ||||
| -rw-r--r-- | ulp_soil.s | 13 |
2 files changed, 20 insertions, 5 deletions
diff --git a/ULPSoilMonitor.ino b/ULPSoilMonitor.ino index d8ebfc7..d91fd3d 100644 --- a/ULPSoilMonitor.ino +++ b/ULPSoilMonitor.ino @@ -69,11 +69,13 @@ static void init_ulp_program() adc1_config_width(ADC_WIDTH_BIT_12); adc1_ulp_enable(); - /* - adc2_config_channel_atten(ADC2_CHANNEL_9, ADC_ATTEN_DB_0); - adc2_config_width(ADC_WIDTH_BIT_12); - adc2_ulp_enable() - */ + gpio_deep_sleep_hold_en(); + + rtc_gpio_init(GPIO_NUM_25); + rtc_gpio_set_direction(GPIO_NUM_25, RTC_GPIO_MODE_OUTPUT_ONLY); + rtc_gpio_pullup_en(GPIO_NUM_25); + rtc_gpio_set_level(GPIO_NUM_25, 1); + rtc_gpio_hold_en(GPIO_NUM_25); /* Set ULP wake up period to 1000ms */ ulp_set_wakeup_period(0, 10000 * 1000); @@ -13,6 +13,7 @@ and C macros may be used in these files */ #include "soc/rtc_cntl_reg.h" +#include "soc/rtc_io_reg.h" #include "soc/soc_ulp.h" /* Configure the number of ADC samples to average on each measurement. @@ -80,6 +81,13 @@ soil5_shadow: .text .global entry entry: + + /* set GPIO25/RTC_GPIO06 low to enable moisture sensors */ +enable_sensors: + WRITE_RTC_REG(RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_HOLD_S, 1, 0) + WRITE_RTC_REG(RTC_GPIO_OUT_W1TC_REG, RTC_GPIO_OUT_DATA_W1TC_S + 6, 1, 1) + WRITE_RTC_REG(RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_HOLD_S, 1, 1) + /* r2: adc_soilx maps soil sensor to adc channel */ /* r3: after measurement return to store soilx value to its shadow value */ measure_soil0: @@ -143,6 +151,11 @@ save_soil5: move r2, soil5_shadow st r0, r2, 0 + /* set GPIO25/RTC_GPIO06 high to disable moisture sensors */ +disable_sensors: + WRITE_RTC_REG(RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_HOLD_S, 1, 0) + WRITE_RTC_REG(RTC_GPIO_OUT_W1TS_REG, RTC_GPIO_OUT_DATA_W1TS_S + 6, 1, 1) + WRITE_RTC_REG(RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_HOLD_S, 1, 1) /* get maximum change in soil value compared to last sent */ calc_max_diff: /* reset max_diff, r0, r1 to zero */ |