esp32: Do not build rmt code for ESP32C2.

Signed-off-by: Rick Sorensen <[email protected]>

Author: ricksorensen

ports/esp32/esp32_rmt.c

@@ -32,6 +32,8 @@
 #include "modesp32.h"
 
 #include "esp_task.h"
+
+#if SOC_RMT_SUPPORTED
 #include "driver/rmt_tx.h"
 #include "driver/rmt_encoder.h"
 
@@ -420,3 +422,5 @@ MP_DEFINE_CONST_OBJ_TYPE(
     locals_dict, &esp32_rmt_locals_dict,
     protocol, &esp32_rmt_stream_p
     );
+
+#endif // SOC_RMT_SUPPORTED

ports/esp32/machine_bitstream.c

@@ -90,6 +90,7 @@ static void IRAM_ATTR machine_bitstream_high_low_bitbang(mp_hal_pin_obj_t pin, u
     mp_hal_quiet_timing_exit(irq_state);
 }
 
+#if SOC_RMT_SUPPORTED
 /******************************************************************************/
 // RMT implementation
 
@@ -166,16 +167,17 @@ static void machine_bitstream_high_low_rmt(mp_hal_pin_obj_t pin, uint32_t *timin
     esp_rom_gpio_connect_out_signal(pin, SIG_GPIO_OUT_IDX, false, false);
 }
 
+#endif
 /******************************************************************************/
 // Interface to machine.bitstream
 
 void machine_bitstream_high_low(mp_hal_pin_obj_t pin, uint32_t *timing_ns, const uint8_t *buf, size_t len) {
-    if (false) {
-        // TODO test whether channel creation was successful?
-        machine_bitstream_high_low_bitbang(pin, timing_ns, buf, len);
-    } else {
-        machine_bitstream_high_low_rmt(pin, timing_ns, buf, len);
-    }
+    #if SOC_RMT_SUPPORTED
+    machine_bitstream_high_low_rmt(pin, timing_ns, buf, len);
+    #else
+    // TODO test whether channel creation was successful?
+    machine_bitstream_high_low_bitbang(pin, timing_ns, buf, len);
+    #endif
 }
 
 #endif // MICROPY_PY_MACHINE_BITSTREAM