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Merge branch 'bugfix/ulp_example_fix_v3.1' into 'release/v3.1'

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ULP example fixes (backport v3.1)

See merge request idf/esp-idf!2818
This commit is contained in:
Angus Gratton 2018-08-01 14:29:29 +08:00
commit c237beff1d
3 changed files with 34 additions and 12 deletions
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8
components/soc/esp32/rtc_periph.c
View file

@ -51,9 +51,9 @@ const rtc_gpio_desc_t rtc_gpio_desc[GPIO_PIN_COUNT] = {
{RTC_IO_XTAL_32K_PAD_REG, RTC_IO_X32P_MUX_SEL_M, RTC_IO_X32P_FUN_SEL_S, RTC_IO_X32P_FUN_IE_M, RTC_IO_X32P_RUE_M, RTC_IO_X32P_RDE_M, RTC_IO_X32P_SLP_SEL_M, RTC_IO_X32P_SLP_IE_M, RTC_IO_X32P_HOLD_M, RTC_CNTL_X32P_HOLD_FORCE_M, RTC_IO_X32P_DRV_V, RTC_IO_X32P_DRV_S, RTCIO_GPIO32_CHANNEL}, //32
{RTC_IO_XTAL_32K_PAD_REG, RTC_IO_X32N_MUX_SEL_M, RTC_IO_X32N_FUN_SEL_S, RTC_IO_X32N_FUN_IE_M, RTC_IO_X32N_RUE_M, RTC_IO_X32N_RDE_M, RTC_IO_X32N_SLP_SEL_M, RTC_IO_X32N_SLP_IE_M, RTC_IO_X32N_HOLD_M, RTC_CNTL_X32N_HOLD_FORCE_M, RTC_IO_X32N_DRV_V, RTC_IO_X32N_DRV_S, RTCIO_GPIO33_CHANNEL}, //33
{RTC_IO_ADC_PAD_REG, RTC_IO_ADC1_MUX_SEL_M, RTC_IO_ADC1_FUN_SEL_S, RTC_IO_ADC1_FUN_IE_M, 0, 0, RTC_IO_ADC1_SLP_SEL_M, RTC_IO_ADC1_SLP_IE_M, RTC_IO_ADC1_HOLD_M, RTC_CNTL_ADC1_HOLD_FORCE_M, 0, 0, RTCIO_GPIO34_CHANNEL}, //34
{RTC_IO_ADC_PAD_REG, RTC_IO_ADC2_MUX_SEL_M, RTC_IO_ADC2_FUN_SEL_S, RTC_IO_ADC2_FUN_IE_M, 0, 0, RTC_IO_ADC2_SLP_SEL_M, RTC_IO_ADC2_SLP_IE_M, RTC_IO_ADC1_HOLD_M, RTC_CNTL_ADC2_HOLD_FORCE_M, 0, 0, RTCIO_GPIO35_CHANNEL}, //35
{RTC_IO_ADC_PAD_REG, RTC_IO_ADC2_MUX_SEL_M, RTC_IO_ADC2_FUN_SEL_S, RTC_IO_ADC2_FUN_IE_M, 0, 0, RTC_IO_ADC2_SLP_SEL_M, RTC_IO_ADC2_SLP_IE_M, RTC_IO_ADC2_HOLD_M, RTC_CNTL_ADC2_HOLD_FORCE_M, 0, 0, RTCIO_GPIO35_CHANNEL}, //35
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE1_MUX_SEL_M, RTC_IO_SENSE1_FUN_SEL_S, RTC_IO_SENSE1_FUN_IE_M, 0, 0, RTC_IO_SENSE1_SLP_SEL_M, RTC_IO_SENSE1_SLP_IE_M, RTC_IO_SENSE1_HOLD_M, RTC_CNTL_SENSE1_HOLD_FORCE_M, 0, 0, RTCIO_GPIO36_CHANNEL}, //36
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE2_MUX_SEL_M, RTC_IO_SENSE2_FUN_SEL_S, RTC_IO_SENSE2_FUN_IE_M, 0, 0, RTC_IO_SENSE2_SLP_SEL_M, RTC_IO_SENSE2_SLP_IE_M, RTC_IO_SENSE1_HOLD_M, RTC_CNTL_SENSE2_HOLD_FORCE_M, 0, 0, RTCIO_GPIO37_CHANNEL}, //37
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE3_MUX_SEL_M, RTC_IO_SENSE3_FUN_SEL_S, RTC_IO_SENSE3_FUN_IE_M, 0, 0, RTC_IO_SENSE3_SLP_SEL_M, RTC_IO_SENSE3_SLP_IE_M, RTC_IO_SENSE1_HOLD_M, RTC_CNTL_SENSE3_HOLD_FORCE_M, 0, 0, RTCIO_GPIO38_CHANNEL}, //38
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE4_MUX_SEL_M, RTC_IO_SENSE4_FUN_SEL_S, RTC_IO_SENSE4_FUN_IE_M, 0, 0, RTC_IO_SENSE4_SLP_SEL_M, RTC_IO_SENSE4_SLP_IE_M, RTC_IO_SENSE1_HOLD_M, RTC_CNTL_SENSE4_HOLD_FORCE_M, 0, 0, RTCIO_GPIO39_CHANNEL}, //39
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE2_MUX_SEL_M, RTC_IO_SENSE2_FUN_SEL_S, RTC_IO_SENSE2_FUN_IE_M, 0, 0, RTC_IO_SENSE2_SLP_SEL_M, RTC_IO_SENSE2_SLP_IE_M, RTC_IO_SENSE2_HOLD_M, RTC_CNTL_SENSE2_HOLD_FORCE_M, 0, 0, RTCIO_GPIO37_CHANNEL}, //37
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE3_MUX_SEL_M, RTC_IO_SENSE3_FUN_SEL_S, RTC_IO_SENSE3_FUN_IE_M, 0, 0, RTC_IO_SENSE3_SLP_SEL_M, RTC_IO_SENSE3_SLP_IE_M, RTC_IO_SENSE3_HOLD_M, RTC_CNTL_SENSE3_HOLD_FORCE_M, 0, 0, RTCIO_GPIO38_CHANNEL}, //38
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE4_MUX_SEL_M, RTC_IO_SENSE4_FUN_SEL_S, RTC_IO_SENSE4_FUN_IE_M, 0, 0, RTC_IO_SENSE4_SLP_SEL_M, RTC_IO_SENSE4_SLP_IE_M, RTC_IO_SENSE4_HOLD_M, RTC_CNTL_SENSE4_HOLD_FORCE_M, 0, 0, RTCIO_GPIO39_CHANNEL}, //39
};

23
examples/system/ulp/main/ulp/pulse_cnt.S
View file

@ -66,12 +66,29 @@ io_number:
.text
.global entry
entry:
/* Read the value of lower 16 RTC IOs into R0 */
READ_RTC_FIELD(RTC_GPIO_IN_REG, RTC_GPIO_IN_NEXT)
/* Load io_number, extract the state of input */
/* Load io_number */
move r3, io_number
ld r3, r3, 0
/* Lower 16 IOs and higher need to be handled separately,
* because r0-r3 registers are 16 bit wide.
* Check which IO this is.
*/
move r0, r3
jumpr read_io_high, 16, ge
/* Read the value of lower 16 RTC IOs into R0 */
READ_RTC_REG(RTC_GPIO_IN_REG, RTC_GPIO_IN_NEXT_S, 16)
rsh r0, r0, r3
jump read_done
/* Read the value of RTC IOs 16-17, into R0 */
read_io_high:
READ_RTC_REG(RTC_GPIO_IN_REG, RTC_GPIO_IN_NEXT_S + 16, 2)
sub r3, r3, 16
rsh r0, r0, r3
read_done:
and r0, r0, 1
/* State of input changed? */
move r3, next_edge

15
examples/system/ulp/main/ulp_example_main.c
View file

@ -13,6 +13,7 @@
#include "nvs_flash.h"
#include "soc/rtc_cntl_reg.h"
#include "soc/sens_reg.h"
#include "soc/rtc_periph.h"
#include "driver/gpio.h"
#include "driver/rtc_io.h"
#include "esp32/ulp.h"
@ -46,6 +47,10 @@ static void init_ulp_program()
(ulp_main_bin_end - ulp_main_bin_start) / sizeof(uint32_t));
ESP_ERROR_CHECK(err);
/* GPIO used for pulse counting. */
gpio_num_t gpio_num = GPIO_NUM_0;
assert(rtc_gpio_desc[gpio_num].reg && "GPIO used for pulse counting must be an RTC IO");
/* Initialize some variables used by ULP program.
* Each 'ulp_xyz' variable corresponds to 'xyz' variable in the ULP program.
* These variables are declared in an auto generated header file,
@ -58,11 +63,11 @@ static void init_ulp_program()
ulp_debounce_counter = 3;
ulp_debounce_max_count = 3;
ulp_next_edge = 0;
ulp_io_number = 11; /* GPIO0 is RTC_IO 11 */
ulp_io_number = rtc_gpio_desc[gpio_num].rtc_num; /* map from GPIO# to RTC_IO# */
ulp_edge_count_to_wake_up = 10;
/* Initialize GPIO0 as RTC IO, input, disable pullup and pulldown */
gpio_num_t gpio_num = GPIO_NUM_0;
/* Initialize selected GPIO as RTC IO, enable input, disable pullup and pulldown */
rtc_gpio_init(gpio_num);
rtc_gpio_set_direction(gpio_num, RTC_GPIO_MODE_INPUT_ONLY);
rtc_gpio_pulldown_dis(gpio_num);
rtc_gpio_pullup_dis(gpio_num);
@ -76,10 +81,10 @@ static void init_ulp_program()
rtc_gpio_isolate(GPIO_NUM_12);
rtc_gpio_isolate(GPIO_NUM_15);
/* Set ULP wake up period to T = 20ms (3095 cycles of RTC_SLOW_CLK clock).
/* Set ULP wake up period to T = 20ms.
* Minimum pulse width has to be T * (ulp_debounce_counter + 1) = 80ms.
*/
REG_SET_FIELD(SENS_ULP_CP_SLEEP_CYC0_REG, SENS_SLEEP_CYCLES_S0, 3095);
ulp_set_wakeup_period(0, 20000);
/* Start the program */
err = ulp_run((&ulp_entry - RTC_SLOW_MEM) / sizeof(uint32_t));