samd: Remove the MICROPY_PY_MACHINE_RTC config option.

RTC is enabled on all boards.  Therefore the conditional compile is not
needed.  Removing it simplifies the source code a little bit.

Signed-off-by: robert-hh <robert@hammelrath.com>

ports/samd/fatfs_port.c

@@ -33,13 +33,5 @@
 extern uint32_t time_offset;
 
 MP_WEAK DWORD get_fattime(void) {
-    #if MICROPY_PY_MACHINE_RTC
     return (RTC->MODE2.CLOCK.reg >> 1) + (20 << 25);
-    #else
-    extern void rtc_gettime(timeutils_struct_time_t *tm);
-    timeutils_struct_time_t tm;
-    timeutils_seconds_since_epoch_to_struct_time(mp_hal_ticks_ms_64() / 1000 + time_offset, &tm);
-    return ((tm.tm_year - 1980) << 25) | ((tm.tm_mon) << 21) | ((tm.tm_mday) << 16) |
-           ((tm.tm_hour) << 11) | ((tm.tm_min) << 5) | (tm.tm_sec / 2);
-    #endif
 }

ports/samd/machine_rtc.c

@@ -31,8 +31,6 @@
 #include "extmod/modmachine.h"
 #include "sam.h"
 
-#if MICROPY_PY_MACHINE_RTC
-
 typedef struct _machine_rtc_obj_t {
     mp_obj_base_t base;
     mp_obj_t callback;
@@ -177,5 +175,3 @@ MP_DEFINE_CONST_OBJ_TYPE(
     make_new, machine_rtc_make_new,
     locals_dict, &machine_rtc_locals_dict
     );
-
-#endif // MICROPY_PY_MACHINE_RTC

ports/samd/modmachine.c

@@ -48,16 +48,10 @@
 
 #define LIGHTSLEEP_CPU_FREQ 200000
 
-#if MICROPY_PY_MACHINE_RTC
-#define MICROPY_PY_MACHINE_RTC_ENTRY { MP_ROM_QSTR(MP_QSTR_RTC), MP_ROM_PTR(&machine_rtc_type) },
-#else
-#define MICROPY_PY_MACHINE_RTC_ENTRY
-#endif
-
 #define MICROPY_PY_MACHINE_EXTRA_GLOBALS \
     { MP_ROM_QSTR(MP_QSTR_Pin),                 MP_ROM_PTR(&machine_pin_type) }, \
     { MP_ROM_QSTR(MP_QSTR_Timer),               MP_ROM_PTR(&machine_timer_type) }, \
-    MICROPY_PY_MACHINE_RTC_ENTRY \
+    { MP_ROM_QSTR(MP_QSTR_RTC),                 MP_ROM_PTR(&machine_rtc_type) }, \
     \
     /* Class constants. */ \
     /* Use numerical constants instead of the symbolic names, */ \

ports/samd/mpconfigport.h

@@ -109,7 +109,6 @@
 #define MICROPY_PY_RANDOM                   (1)
 #define MICROPY_PY_DEFLATE                  (1)
 #define MICROPY_PY_ASYNCIO                  (1)
-#define MICROPY_PY_MACHINE_RTC              (1)
 #ifndef MICROPY_PY_MACHINE_ADC
 #define MICROPY_PY_MACHINE_ADC              (1)
 #endif

ports/samd/samd_soc.c

@@ -38,9 +38,7 @@
 #include "tusb.h"
 #include "mphalport.h"
 
-#if MICROPY_PY_MACHINE_RTC
 extern void machine_rtc_start(bool force);
-#endif
 
 static void usb_init(void) {
     // Init USB clock
@@ -124,9 +122,7 @@ void samd_init(void) {
     #if defined(MCU_SAMD51)
     mp_hal_ticks_cpu_enable();
     #endif
-    #if MICROPY_PY_MACHINE_RTC
     machine_rtc_start(false);
-    #endif
 }
 
 #if MICROPY_PY_MACHINE_I2C || MICROPY_PY_MACHINE_SPI || MICROPY_PY_MACHINE_UART