ports/rp2: Use dupterm for USBD_CDC repl connection.

Signed-off-by: Andrew Leech <[email protected]>

Author: pi-anl

ports/rp2/CMakeLists.txt

@@ -161,6 +161,7 @@ set(MICROPY_SOURCE_QSTR
     ${MICROPY_DIR}/shared/runtime/mpirq.c
     ${MICROPY_DIR}/shared/runtime/sys_stdio_mphal.c
     ${MICROPY_DIR}/shared/tinyusb/mp_usbd_runtime.c
+    ${MICROPY_DIR}/shared/tinyusb/mp_usbd_cdc.c
     ${MICROPY_PORT_DIR}/machine_adc.c
     ${MICROPY_PORT_DIR}/machine_i2c.c
     ${MICROPY_PORT_DIR}/machine_pin.c

ports/rp2/mpconfigport.h

@@ -104,7 +104,7 @@
 #define MICROPY_EPOCH_IS_1970                   (1)
 #define MICROPY_PY_OS_INCLUDEFILE               "ports/rp2/modos.c"
 #ifndef MICROPY_PY_OS_DUPTERM
-#define MICROPY_PY_OS_DUPTERM                   (1)
+#define MICROPY_PY_OS_DUPTERM                   (2)
 #define MICROPY_PY_OS_DUPTERM_NOTIFY            (1)
 #endif
 #define MICROPY_PY_OS_SYNC                      (1)

ports/rp2/mphalport.c

@@ -61,37 +61,34 @@ ringbuf_t stdin_ringbuf = { stdin_ringbuf_array, sizeof(stdin_ringbuf_array) };
 
 uintptr_t mp_hal_stdio_poll(uintptr_t poll_flags) {
     uintptr_t ret = 0;
-    #if MICROPY_HW_USB_CDC
-    ret |= mp_usbd_cdc_poll_interfaces(poll_flags);
-    #endif
     #if MICROPY_HW_ENABLE_UART_REPL
     if (poll_flags & MP_STREAM_POLL_WR) {
         ret |= MP_STREAM_POLL_WR;
     }
     #endif
     #if MICROPY_PY_OS_DUPTERM
     ret |= mp_os_dupterm_poll(poll_flags);
+    #elif MICROPY_HW_USB_CDC
+    ret |= mp_usbd_cdc_poll_interfaces(poll_flags);
     #endif
     return ret;
 }
 
 // Receive single character
 int mp_hal_stdin_rx_chr(void) {
     for (;;) {
-        #if MICROPY_HW_USB_CDC
-        mp_usbd_cdc_poll_interfaces(0);
-        #endif
-
-        int c = ringbuf_get(&stdin_ringbuf);
-        if (c != -1) {
-            return c;
-        }
         #if MICROPY_PY_OS_DUPTERM
         int dupterm_c = mp_os_dupterm_rx_chr();
         if (dupterm_c >= 0) {
             return dupterm_c;
         }
+        #elif MICROPY_HW_USB_CDC
+        mp_usbd_cdc_poll_interfaces(0);
         #endif
+        int c = ringbuf_get(&stdin_ringbuf);
+        if (c != -1) {
+            return c;
+        }
         mp_event_wait_indefinite();
     }
 }
@@ -105,20 +102,18 @@ mp_uint_t mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
     did_write = true;
     #endif
 
-    #if MICROPY_HW_USB_CDC
-    mp_uint_t cdc_res = mp_usbd_cdc_tx_strn(str, len);
-    if (cdc_res > 0) {
-        did_write = true;
-        ret = MIN(cdc_res, ret);
-    }
-    #endif
-
     #if MICROPY_PY_OS_DUPTERM
     int dupterm_res = mp_os_dupterm_tx_strn(str, len);
     if (dupterm_res >= 0) {
         did_write = true;
         ret = MIN((mp_uint_t)dupterm_res, ret);
     }
+    #elif MICROPY_HW_USB_CDC
+    mp_uint_t cdc_res = mp_usbd_cdc_tx_strn(str, len);
+    if (cdc_res > 0) {
+        did_write = true;
+        ret = MIN(cdc_res, ret);
+    }
     #endif
     return did_write ? ret : 0;
 }