RE: USBD CDC ACM can't get one byte

Sigurd — Mon, 18 Mar 2019 15:29:55 GMT

Hi,

If you don't wait until the buffer is full or the end of line character arrives, you will get 1 BLE packet for each byte you send. It won't be very efficient, but it's possible to do. Starting from the default example in the SDK 15.3, I believe the only change you need to do is this:

Diff:

--- C:/SDK/nRF5_SDK_15.3.0_59ac345/nRF5_SDK_15.3.0_59ac345/examples/peripheral/usbd_ble_uart/main.c	ma mar 18 16:20:45 2019
+++ C:/SDK/nRF5_SDK_15.3.0_59ac345/nRF5_SDK_15.3.0_59ac345/examples/peripheral/usbd_ble_uart/main_modified.c	ma mar 18 16:08:59 2019
@@ -699,3 +699,3 @@ static void cdc_acm_user_ev_handler(app_usbd_class
-                if ((m_cdc_data_array[index - 1] == '\n') ||
-                    (m_cdc_data_array[index - 1] == '\r') ||
-                    (index >= (m_ble_nus_max_data_len)))
+                if (   (m_cdc_data_array[index - 1] == '\n') ||
+                       (m_cdc_data_array[index - 1] == '\r') ||
+                       (index >= (m_ble_nus_max_data_len))   ||    true      )
@@ -703 +703 @@ static void cdc_acm_user_ev_handler(app_usbd_class
-                    if (index > 1)
+                    if (index >= 1)

RE: USBD CDC ACM can't get one byte

awneil — Mon, 04 Mar 2019 16:01:04 GMT

How to properly post source code: