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espressif_tinyusb
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echo to both serial at once

This commit is contained in:
hathach 2020-01-11 12:59:02 +07:00
parent 242a2b6126
commit 08da3e80b7
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GPG Key ID: 2FA891220FBFD581
1 changed files with 7 additions and 4 deletions
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11
examples/device/cdc_dual_ports/src/main.c
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@ -50,7 +50,9 @@ int main(void)
return 0;
}
static void echo_all(uint8_t itf, uint8_t buf[], uint32_t count)
// echo to either Serial0 or Serial1
// with Serial0 as all lower case, Serial1 as all upper case
static void echo_serial_port(uint8_t itf, uint8_t buf[], uint32_t count)
{
for(uint32_t i=0; i<count; i++)
{
@ -64,7 +66,7 @@ static void echo_all(uint8_t itf, uint8_t buf[], uint32_t count)
// echo back additional ports as upper case
if (islower(buf[i])) buf[i] -= 'a' - 'A';
}
tud_cdc_n_write_char(itf, buf[i]);
if ( buf[i] == '\r' ) tud_cdc_n_write_char(itf, '\n');
@ -89,8 +91,9 @@ static void cdc_task(void)
uint32_t count = tud_cdc_n_read(itf, buf, sizeof(buf));
// echo back to cdc
echo_all(itf, buf, count);
// echo back to both serial ports
echo_serial_port(0, buf, count);
echo_serial_port(1, buf, count);
}
}
}