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Merge branch 'bugfix/select_rtc_slow_clk' into 'master'

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esp32/clk: Fix starting rtc oscillator if it bad

See merge request idf/esp-idf!2215
This commit is contained in:
Angus Gratton
2018-05-15 12:57:22 +08:00
parent c522f44276 9ad0760b9d
commit 662fe55996
3 changed files with 139 additions and 30 deletions
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115
components/soc/esp32/test/test_rtc_clk.c
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@@ -13,6 +13,7 @@
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "../esp_clk_internal.h"
#include "esp_clk.h"
@@ -134,7 +135,7 @@ TEST_CASE("Test fast switching between PLL and XTAL", "[rtc_clk]")
}
#define COUNT_TEST 10
#define TIMEOUT_TEST_MS 50
#define TIMEOUT_TEST_MS (5 + CONFIG_ESP32_RTC_CLK_CAL_CYCLES / 16)
void stop_rtc_external_quartz(){
const uint8_t pin_32 = 32;
@@ -151,6 +152,68 @@ void stop_rtc_external_quartz(){
gpio_output_set_high(0, 0, 0, mask_32 | mask_33); // disable pins
}
static void start_freq(rtc_slow_freq_t required_src_freq, uint32_t start_delay_ms)
{
int i = 0, fail = 0;
uint32_t start_time;
uint32_t end_time;
rtc_slow_freq_t selected_src_freq;
stop_rtc_external_quartz();
#ifdef CONFIG_ESP32_RTC_CLOCK_SOURCE_EXTERNAL_CRYSTAL
uint32_t bootstrap_cycles = CONFIG_ESP32_RTC_XTAL_BOOTSTRAP_CYCLES;
printf("Test is started. Kconfig settings:\n External 32K crystal is selected,\n Oscillation cycles = %d,\n Calibration cycles = %d.\n",
bootstrap_cycles,
CONFIG_ESP32_RTC_CLK_CAL_CYCLES);
#else
uint32_t bootstrap_cycles = 5;
printf("Test is started. Kconfig settings:\n Internal RC is selected,\n Oscillation cycles = %d,\n Calibration cycles = %d.\n",
bootstrap_cycles,
CONFIG_ESP32_RTC_CLK_CAL_CYCLES);
#endif
if (start_delay_ms == 0 && CONFIG_ESP32_RTC_CLK_CAL_CYCLES < 1500){
start_delay_ms = 50;
printf("Recommended increase Number of cycles for RTC_SLOW_CLK calibration to 3000!\n");
}
while(i < COUNT_TEST){
start_time = xTaskGetTickCount() * (1000 / configTICK_RATE_HZ);
i++;
printf("attempt #%d/%d...", i, COUNT_TEST);
rtc_clk_32k_bootstrap(bootstrap_cycles);
ets_delay_us(start_delay_ms * 1000);
rtc_clk_select_rtc_slow_clk();
selected_src_freq = rtc_clk_slow_freq_get();
end_time = xTaskGetTickCount() * (1000 / configTICK_RATE_HZ);
printf(" [time=%d] ", (end_time - start_time) - start_delay_ms);
if(selected_src_freq != required_src_freq){
printf("FAIL. Time measurement...");
fail = 1;
} else {
printf("PASS. Time measurement...");
}
uint64_t clk_rtc_time;
uint32_t fail_measure = 0;
for (int j = 0; j < 3; ++j) {
clk_rtc_time = esp_clk_rtc_time();
ets_delay_us(1000000);
uint64_t delta = esp_clk_rtc_time() - clk_rtc_time;
if (delta < 900000LL || delta > 1100000){
printf("FAIL");
fail = 1;
fail_measure = 1;
break;
}
}
if(fail_measure == 0) {
printf("PASS");
}
printf(" [calibration val = %d] \n", esp_clk_slowclk_cal_get());
stop_rtc_external_quartz();
ets_delay_us(500000);
}
TEST_ASSERT_MESSAGE(fail == 0, "Test failed");
printf("Test passed successfully\n");
}
#ifdef CONFIG_SPIRAM_SUPPORT
// PSRAM tests run on ESP-WROVER-KIT boards, which have the 32k XTAL installed.
// Other tests may run on DevKitC boards, which don't have a 32k XTAL.
@@ -159,16 +222,29 @@ TEST_CASE("Test starting external RTC quartz", "[rtc_clk]")
int i = 0, fail = 0;
uint32_t start_time;
uint32_t end_time;
stop_rtc_external_quartz();
printf("Start test. Number of oscillation cycles = %d\n", CONFIG_ESP32_RTC_XTAL_BOOTSTRAP_CYCLES);
#ifdef CONFIG_ESP32_RTC_CLOCK_SOURCE_EXTERNAL_CRYSTAL
uint32_t bootstrap_cycles = CONFIG_ESP32_RTC_XTAL_BOOTSTRAP_CYCLES;
printf("Test is started. Kconfig settings:\n External 32K crystal is selected,\n Oscillation cycles = %d,\n Calibration cycles = %d.\n",
bootstrap_cycles,
CONFIG_ESP32_RTC_CLK_CAL_CYCLES);
#else
uint32_t bootstrap_cycles = 5;
printf("Test is started. Kconfig settings:\n Internal RC is selected,\n Oscillation cycles = %d,\n Calibration cycles = %d.\n",
bootstrap_cycles,
CONFIG_ESP32_RTC_CLK_CAL_CYCLES);
#endif
if (CONFIG_ESP32_RTC_CLK_CAL_CYCLES < 1500){
printf("Recommended increase Number of cycles for RTC_SLOW_CLK calibration to 3000!\n");
}
while(i < COUNT_TEST){
start_time = xTaskGetTickCount() * (1000 / configTICK_RATE_HZ);
i++;
printf("attempt #%d/%d...", i, COUNT_TEST);
rtc_clk_32k_bootstrap(CONFIG_ESP32_RTC_XTAL_BOOTSTRAP_CYCLES);
rtc_clk_32k_bootstrap(bootstrap_cycles);
rtc_clk_select_rtc_slow_clk();
end_time = xTaskGetTickCount() * (1000 / configTICK_RATE_HZ);
printf(" [time=%d] ", end_time - start_time);
if((end_time - start_time) > TIMEOUT_TEST_MS){
printf("FAIL\n");
fail = 1;
@@ -178,11 +254,30 @@ TEST_CASE("Test starting external RTC quartz", "[rtc_clk]")
stop_rtc_external_quartz();
ets_delay_us(100000);
}
if (fail == 1){
printf("Test failed\n");
TEST_ASSERT(false);
} else {
printf("Test passed successfully\n");
}
TEST_ASSERT_MESSAGE(fail == 0, "Test failed");
printf("Test passed successfully\n");
}
TEST_CASE("Test starting 'External 32kHz XTAL' on the board with it.", "[rtc_clk]")
{
start_freq(RTC_SLOW_FREQ_32K_XTAL, 200);
start_freq(RTC_SLOW_FREQ_32K_XTAL, 0);
}
#else
TEST_CASE("Test starting 'External 32kHz XTAL' on the board without it.", "[rtc_clk]")
{
printf("Tries to start the 'External 32kHz XTAL' on the board without it. "
"Clock switching to 'Internal 150 kHz RC oscillator'.\n");
printf("This test will be successful for boards without an external crystal or non-working crystal. "
"First, there will be an attempt to start from the external crystal after a failure "
"will switch to the internal RC circuit. If the switch to the internal RC circuit "
"was successful then the test succeeded.\n");
start_freq(RTC_SLOW_FREQ_RTC, 200);
start_freq(RTC_SLOW_FREQ_RTC, 0);
}
#endif // CONFIG_SPIRAM_SUPPORT