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esp32,ulp: add tests for TSENS

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This commit is contained in:
Ivan Grokhotkov 2017-02-20 15:44:49 +08:00
parent dbf60eb922
commit d0d2c4cb49
4 changed files with 88 additions and 1 deletions
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20
components/esp32/test/test_tsens.c Normal file
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@ -0,0 +1,20 @@
#include <stdio.h>
#include "unity.h"
#include "rom/ets_sys.h"
#include "soc/rtc_cntl_reg.h"
#include "soc/sens_reg.h"
TEST_CASE("can control TSENS using registers", "[rtc][ignore]")
{
SET_PERI_REG_BITS(SENS_SAR_MEAS_WAIT2_REG, SENS_FORCE_XPD_SAR, 3, SENS_FORCE_XPD_SAR_S);
SET_PERI_REG_BITS(SENS_SAR_TSENS_CTRL_REG, SENS_TSENS_CLK_DIV, 10, SENS_TSENS_CLK_DIV_S);
CLEAR_PERI_REG_MASK(SENS_SAR_TSENS_CTRL_REG, SENS_TSENS_POWER_UP);
CLEAR_PERI_REG_MASK(SENS_SAR_TSENS_CTRL_REG, SENS_TSENS_DUMP_OUT);
SET_PERI_REG_MASK(SENS_SAR_TSENS_CTRL_REG, SENS_TSENS_POWER_UP_FORCE);
SET_PERI_REG_MASK(SENS_SAR_TSENS_CTRL_REG, SENS_TSENS_POWER_UP);
ets_delay_us(100);
SET_PERI_REG_MASK(SENS_SAR_TSENS_CTRL_REG, SENS_TSENS_DUMP_OUT);
ets_delay_us(5);
int res = GET_PERI_REG_BITS2(SENS_SAR_SLAVE_ADDR3_REG, SENS_TSENS_OUT, SENS_TSENS_OUT_S);
printf("res=%d\n", res);
}

14
components/ulp/include/esp32/ulp.h
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@ -222,7 +222,7 @@ typedef union {
struct {
uint32_t dreg : 2; /*!< Register where to store temperature measurement result */
uint32_t wait_delay: 14; /*!< Cycles to wait after measurement is done */
uint32_t cycles: 12; /*!< Cycles used to perform measurement */
uint32_t reserved: 12; /*!< Reserved, set to 0 */
uint32_t opcode: 4; /*!< Opcode (OPCODE_TSENS) */
} tsens; /*!< Format of TSENS instruction */
@ -360,6 +360,18 @@ static inline uint32_t SOC_REG_TO_ULP_PERIPH_SEL(uint32_t reg) {
.sub_opcode = SUB_OPCODE_SLEEP, \
.opcode = OPCODE_END } }
/**
* Perform temperature sensor measurement and store it into reg_dest.
*
* Delay can be set between 1 and ((1 << 14) - 1). Higher values give
* higher measurement resolution.
*/
#define I_TSENS(reg_dest, delay) { .tsens = { \
.dreg = reg_dest, \
.wait_delay = delay, \
.reserved = 0, \
.opcode = OPCODE_TSENS } }
/**
* Store value from register reg_val into RTC memory.
*

52
components/ulp/test/test_ulp.c
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@ -207,3 +207,55 @@ TEST_CASE("ulp controls RTC_IO", "[ulp][ignore]")
esp_deep_sleep_start();
}
TEST_CASE("ulp can use TSENS in deep sleep", "[ulp][ignore]")
{
assert(CONFIG_ULP_COPROC_RESERVE_MEM >= 260 && "this test needs ULP_COPROC_RESERVE_MEM option set in menuconfig");
hexdump(RTC_SLOW_MEM, CONFIG_ULP_COPROC_RESERVE_MEM / 4);
printf("\n\n");
memset(RTC_SLOW_MEM, 0, CONFIG_ULP_COPROC_RESERVE_MEM);
// Allow TSENS to be controlled by the ULP
SET_PERI_REG_BITS(SENS_SAR_TSENS_CTRL_REG, SENS_TSENS_CLK_DIV, 10, SENS_TSENS_CLK_DIV_S);
SET_PERI_REG_BITS(SENS_SAR_MEAS_WAIT2_REG, SENS_FORCE_XPD_SAR, 3, SENS_FORCE_XPD_SAR_S);
CLEAR_PERI_REG_MASK(SENS_SAR_TSENS_CTRL_REG, SENS_TSENS_POWER_UP);
CLEAR_PERI_REG_MASK(SENS_SAR_TSENS_CTRL_REG, SENS_TSENS_DUMP_OUT);
CLEAR_PERI_REG_MASK(SENS_SAR_TSENS_CTRL_REG, SENS_TSENS_POWER_UP_FORCE);
// data start offset
size_t offset = 20;
// number of samples to collect
RTC_SLOW_MEM[offset] = (CONFIG_ULP_COPROC_RESERVE_MEM) / 4 - offset - 8;
// sample counter
RTC_SLOW_MEM[offset + 1] = 0;
const ulp_insn_t program[] = {
I_MOVI(R1, offset), // r1 <- offset
I_LD(R2, R1, 1), // r2 <- counter
I_LD(R3, R1, 0), // r3 <- length
I_SUBI(R3, R3, 1), // end = length - 1
I_SUBR(R3, R3, R2), // r3 = length - counter
M_BXF(1), // if overflow goto 1:
I_WR_REG(SENS_SAR_MEAS_WAIT2_REG, SENS_FORCE_XPD_SAR_S, SENS_FORCE_XPD_SAR_S + 1, 3),
I_TSENS(R0, 16383), // r0 <- tsens
I_WR_REG(SENS_SAR_MEAS_WAIT2_REG, SENS_FORCE_XPD_SAR_S, SENS_FORCE_XPD_SAR_S + 1, 0),
I_ST(R0, R2, offset + 4),
I_ADDI(R2, R2, 1), // counter += 1
I_ST(R2, R1, 1), // save counter
I_SLEEP(0), // enter sleep
I_HALT(),
M_LABEL(1), // done with measurements
I_END(0), // stop ULP timer
I_HALT()
};
size_t size = sizeof(program)/sizeof(ulp_insn_t);
TEST_ESP_OK(ulp_process_macros_and_load(0, program, &size));
assert(offset >= size);
TEST_ESP_OK(ulp_run(0));
esp_deep_sleep_enable_timer_wakeup(4000000);
esp_deep_sleep_start();
}

3
components/ulp/ulp.c
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@ -271,6 +271,9 @@ esp_err_t ulp_run(uint32_t entry_point)
CLEAR_PERI_REG_MASK(SENS_SAR_START_FORCE_REG, SENS_ULP_CP_FORCE_START_TOP_M);
// make sure voltage is raised when RTC 8MCLK is enabled
SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_I2C_FOLW_8M);
SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_CORE_FOLW_8M);
SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_SLEEP_FOLW_8M);
SET_PERI_REG_BITS(SENS_ULP_CP_SLEEP_CYC0_REG, SENS_SLEEP_CYCLES_S0, 1000, SENS_SLEEP_CYCLES_S0_S);
// enable ULP timer
SET_PERI_REG_MASK(RTC_CNTL_STATE0_REG, RTC_CNTL_ULP_CP_SLP_TIMER_EN);
return ESP_OK;