nrf/usb_cdc.c: Add support for Arduino 1200bps touch.

iabdalkader · iabdalkader · commit aa6ac6063b8c · 2022-06-07T12:42:33.000+02:00
diff --git a/ports/nrf/drivers/usb/usb_cdc.c b/ports/nrf/drivers/usb/usb_cdc.c
@@ -35,6 +35,7 @@
 #include "nrfx_uart.h"
 #include "py/ringbuf.h"
 #include "py/stream.h"
+#include "py/runtime.h"
 
 #ifdef BLUETOOTH_SD
 #include "nrf_sdm.h"
@@ -193,6 +194,25 @@ void usb_cdc_sd_event_handler(uint32_t soc_evt) {
 }
 #endif
 
+#if MICROPY_HW_USB_CDC_1200BPS_TOUCH
+static mp_sched_node_t mp_bootloader_sched_node;
+STATIC void usbd_cdc_run_bootloader_task(mp_sched_node_t *node) {
+    mp_hal_delay_ms(250);
+    MICROPY_BOARD_ENTER_BOOTLOADER();
+}
+
+void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts) {
+    if (dtr == false && rts == false) {
+        cdc_line_coding_t line_coding;
+        tud_cdc_n_get_line_coding(itf, &line_coding);
+        if (line_coding.bit_rate == 1200) {
+            // Delay bootloader jump to allow the USB stack to service endpoints.
+            mp_sched_schedule_node(&mp_bootloader_sched_node, usbd_cdc_run_bootloader_task);
+        }
+    }
+}
+#endif
+
 uintptr_t mp_hal_stdio_poll(uintptr_t poll_flags) {
     uintptr_t ret = 0;
     if (poll_flags & MP_STREAM_POLL_RD) {
diff --git a/ports/nrf/mpconfigport.h b/ports/nrf/mpconfigport.h
@@ -157,6 +157,8 @@
 #define MICROPY_MODULE_WEAK_LINKS   (1)
 #define MICROPY_CAN_OVERRIDE_BUILTINS (1)
 #define MICROPY_USE_INTERNAL_ERRNO  (1)
+#define MICROPY_ENABLE_SCHEDULER    (1)
+#define MICROPY_SCHEDULER_STATIC_NODES (1)
 #define MICROPY_PY_FUNCTION_ATTRS   (1)
 #define MICROPY_PY_BUILTINS_STR_UNICODE (1)
 #define MICROPY_PY_BUILTINS_MEMORYVIEW (1)
