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add led blinky to cdc_dual_ports example

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hathach 2024-03-11 22:00:21 +07:00
parent 5653232144
commit 2a4b27ed33
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GPG Key ID: 26FAB84F615C3C52
1 changed files with 50 additions and 20 deletions
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70
examples/device/cdc_dual_ports/src/main.c
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@ -31,12 +31,24 @@
#include "bsp/board_api.h"
#include "tusb.h"
//------------- prototypes -------------//
/* Blink pattern
* - 250 ms : device not mounted
* - 1000 ms : device mounted
* - 2500 ms : device is suspended
*/
enum {
BLINK_NOT_MOUNTED = 250,
BLINK_MOUNTED = 1000,
BLINK_SUSPENDED = 2500,
};
static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
static void led_blinking_task(void);
static void cdc_task(void);
/*------------- MAIN -------------*/
int main(void)
{
int main(void) {
board_init();
// init device stack on configured roothub port
@ -46,28 +58,23 @@ int main(void)
board_init_after_tusb();
}
while (1)
{
while (1) {
tud_task(); // tinyusb device task
cdc_task();
led_blinking_task();
}
}
// 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)
{
static void echo_serial_port(uint8_t itf, uint8_t buf[], uint32_t count) {
uint8_t const case_diff = 'a' - 'A';
for(uint32_t i=0; i<count; i++)
{
if (itf == 0)
{
for (uint32_t i = 0; i < count; i++) {
if (itf == 0) {
// echo back 1st port as lower case
if (isupper(buf[i])) buf[i] += case_diff;
}
else
{
} else {
// echo back 2nd port as upper case
if (islower(buf[i])) buf[i] -= case_diff;
}
@ -77,21 +84,29 @@ static void echo_serial_port(uint8_t itf, uint8_t buf[], uint32_t count)
tud_cdc_n_write_flush(itf);
}
// Invoked when device is mounted
void tud_mount_cb(void) {
blink_interval_ms = BLINK_MOUNTED;
}
// Invoked when device is unmounted
void tud_umount_cb(void) {
blink_interval_ms = BLINK_NOT_MOUNTED;
}
//--------------------------------------------------------------------+
// USB CDC
//--------------------------------------------------------------------+
static void cdc_task(void)
{
static void cdc_task(void) {
uint8_t itf;
for (itf = 0; itf < CFG_TUD_CDC; itf++)
{
for (itf = 0; itf < CFG_TUD_CDC; itf++) {
// connected() check for DTR bit
// Most but not all terminal client set this when making connection
// if ( tud_cdc_n_connected(itf) )
{
if ( tud_cdc_n_available(itf) )
{
if (tud_cdc_n_available(itf)) {
uint8_t buf[64];
uint32_t count = tud_cdc_n_read(itf, buf, sizeof(buf));
@ -103,3 +118,18 @@ static void cdc_task(void)
}
}
}
//--------------------------------------------------------------------+
// BLINKING TASK
//--------------------------------------------------------------------+
void led_blinking_task(void) {
static uint32_t start_ms = 0;
static bool led_state = false;
// Blink every interval ms
if (board_millis() - start_ms < blink_interval_ms) return; // not enough time
start_ms += blink_interval_ms;
board_led_write(led_state);
led_state = 1 - led_state; // toggle
}