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pfalconpfalcon
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esp8266: Reset "virtual RTC" on power on.
Initialize RTC period coefficients, etc. if RTC RAM doesn't contain valid values. time.time() then will return number of seconds since power-on, unless set to different timebase. This reuses MEM_MAGIC for the purpose beyond its initial purpose (but the whole modpybrtc.c need to be eventually reworked completely anyway).
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Lines changed: 16 additions & 0 deletions

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‎esp8266/esp_mphal.c‎

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@@ -37,6 +37,7 @@ extern void ets_delay_us();
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void mp_hal_init(void) {
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ets_wdt_disable(); // it's a pain while developing
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mp_hal_rtc_init();
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uart_init(UART_BIT_RATE_115200, UART_BIT_RATE_115200);
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}
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‎esp8266/esp_mphal.h‎

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@@ -31,6 +31,7 @@
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void ets_isr_mask(unsigned);
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void mp_hal_init(void);
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void mp_hal_rtc_init(void);
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void mp_hal_feed_watchdog(void);
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uint32_t mp_hal_ticks_us(void);

‎esp8266/modpybrtc.c‎

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@@ -49,6 +49,20 @@ typedef struct _pyb_rtc_obj_t {
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// singleton RTC object
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STATIC const pyb_rtc_obj_t pyb_rtc_obj = {{&pyb_rtc_type}};
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void mp_hal_rtc_init(void) {
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uint32_t magic;
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system_rtc_mem_read(MEM_USER_MAGIC_ADDR, &magic, sizeof(magic));
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if (magic != MEM_MAGIC) {
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magic = MEM_MAGIC;
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system_rtc_mem_write(MEM_USER_MAGIC_ADDR, &magic, sizeof(magic));
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uint32_t cal = system_rtc_clock_cali_proc();
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int64_t delta = 0;
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system_rtc_mem_write(MEM_CAL_ADDR, &cal, sizeof(cal));
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system_rtc_mem_write(MEM_DELTA_ADDR, &delta, sizeof(delta));
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}
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}
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STATIC mp_obj_t pyb_rtc_make_new(const mp_obj_type_t *type, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
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// check arguments
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mp_arg_check_num(n_args, n_kw, 0, 0, false);

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