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Tests: USB: Wait before transmitting data to host 

Despite having ECHO and ECHOCTL POSIX lflags disabled by default by
pyserial, a delay is needed for host to properly handle data received
from USB serial/CDC device.
With no delay host would echo 0x00-0x31 characters prefixed with '^'.
pull/9768/head
Filip Jagodzinski 2018-09-20 11:44:03 +02:00 committed by Russ Butler
parent dbfd43a098
commit 2d4d111445
1 changed files with 11 additions and 0 deletions
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11
TESTS/usb_device/serial/main.cpp
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@ -49,6 +49,12 @@
// to handle the reconnect operation correctly.
#define USB_DISCONNECT_DELAY_MS 1
// Despite having ECHO and ECHOCTL POSIX lflags disabled by default by
// pyserial, a delay is needed for host to properly handle data received
// from USB serial/CDC device.
// With no delay host would echo 0x00-0x31 characters prefixed with '^'.
#define TX_DELAY_MS 10
#define LINE_CODING_STRLEN 13 // 6 + 2 + 1 + 1 + 3 * comma
using utest::v1::Case;
@ -247,6 +253,7 @@ void test_cdc_rx_single_bytes_concurrent()
usb_cdc.connect();
greentea_send_kv(MSG_KEY_SEND_BYTES_SINGLE, usb_cdc_sn);
usb_cdc.wait_ready();
wait_ms(TX_DELAY_MS);
Thread tx_thread;
event_flags.set(EF_SEND);
tx_thread.start(mbed::callback(tx_thread_fun, &usb_cdc));
@ -316,6 +323,7 @@ void test_cdc_rx_multiple_bytes_concurrent()
usb_cdc.connect();
greentea_send_kv(MSG_KEY_SEND_BYTES_MULTIPLE, usb_cdc_sn);
usb_cdc.wait_ready();
wait_ms(TX_DELAY_MS);
Thread tx_thread;
event_flags.set(EF_SEND);
tx_thread.start(mbed::callback(tx_thread_fun, &usb_cdc));
@ -355,6 +363,7 @@ void test_cdc_loopback()
usb_cdc.connect();
greentea_send_kv(MSG_KEY_LOOPBACK, usb_cdc_sn);
usb_cdc.wait_ready();
wait_ms(TX_DELAY_MS);
uint8_t rx_buff, tx_buff;
for (int i = 0; i < CDC_LOOPBACK_REPS; i++) {
tx_buff = (uint8_t)(rand() % 0x100);
@ -540,6 +549,7 @@ void test_serial_printf_scanf()
while (!usb_serial.connected()) {
wait_ms(1);
}
wait_ms(TX_DELAY_MS);
static const char fmt[] = "Formatted\nstring %i.";
int tx_val, rx_val, rc;
for (int i = 0; i < SERIAL_LOOPBACK_REPS; i++) {
@ -585,6 +595,7 @@ void test_serial_line_coding_change()
while (!usb_serial.connected()) {
wait_ms(1);
}
wait_ms(TX_DELAY_MS);
usb_serial.attach(line_coding_changed_cb);
size_t num_line_codings = sizeof test_codings / sizeof test_codings[0];
line_coding_t *lc_prev = &default_lc;