diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/host/cdc_msc_hid/src/main.c | 63 |
1 files changed, 58 insertions, 5 deletions
diff --git a/examples/host/cdc_msc_hid/src/main.c b/examples/host/cdc_msc_hid/src/main.c index 9ec213090..8f61310d5 100644 --- a/examples/host/cdc_msc_hid/src/main.c +++ b/examples/host/cdc_msc_hid/src/main.c @@ -110,21 +110,74 @@ void cdc_task(void) // USB HID //--------------------------------------------------------------------+ #if CFG_TUH_HID_KEYBOARD -void hid_task(void) + +uint8_t const keycode2ascii[128][2] = { HID_KEYCODE_TO_ASCII }; + +// look up new key in previous keys +static inline bool find_key_in_report(hid_keyboard_report_t const *p_report, uint8_t keycode) +{ + for(uint8_t i=0; i<6; i++) + { + if (p_report->keycode[i] == keycode) return true; + } + + return false; +} + +static inline void process_kbd_report(hid_keyboard_report_t const *p_new_report) { + static hid_keyboard_report_t prev_report = { 0, 0, {0} }; // previous report to check key released + + //------------- example code ignore control (non-printable) key affects -------------// + for(uint8_t i=0; i<6; i++) + { + if ( p_new_report->keycode[i] ) + { + if ( find_key_in_report(&prev_report, p_new_report->keycode[i]) ) + { + // exist in previous report means the current key is holding + }else + { + // not existed in previous report means the current key is pressed + bool const is_shift = p_new_report->modifier & (KEYBOARD_MODIFIER_LEFTSHIFT | KEYBOARD_MODIFIER_RIGHTSHIFT); + uint8_t ch = keycode2ascii[p_new_report->keycode[i]][is_shift ? 1 : 0]; + putchar(ch); + if ( ch == '\r' ) putchar('\n'); // added new line for enter key + } + } + // TODO example skips key released + } + + prev_report = *p_new_report; +} + +CFG_TUSB_MEM_SECTION static hid_keyboard_report_t usb_keyboard_report; +void hid_task(void) +{ + uint8_t const addr = 1; + if ( tuh_hid_keyboard_is_mounted(addr) ) + { + if ( !tuh_hid_keyboard_is_busy(addr) ) + { + process_kbd_report(&usb_keyboard_report); + tuh_hid_keyboard_get_report(addr, &usb_keyboard_report); + } + } } void tuh_hid_keyboard_mounted_cb(uint8_t dev_addr) { // application set-up - printf("\na Keyboard device (address %d) is mounted\n", dev_addr); + printf("A Keyboard device (address %d) is mounted\r\n", dev_addr); + + tuh_hid_keyboard_get_report(dev_addr, &usb_keyboard_report); } void tuh_hid_keyboard_unmounted_cb(uint8_t dev_addr) { // application tear-down - printf("\na Keyboard device (address %d) is unmounted\n", dev_addr); + printf("A Keyboard device (address %d) is unmounted\r\n", dev_addr); } // invoked ISR context @@ -139,13 +192,13 @@ void tuh_hid_keyboard_isr(uint8_t dev_addr, xfer_result_t event) void tuh_hid_mouse_mounted_cb(uint8_t dev_addr) { // application set-up - printf("\na Mouse device (address %d) is mounted\n", dev_addr); + printf("A Mouse device (address %d) is mounted\r\n", dev_addr); } void tuh_hid_mouse_unmounted_cb(uint8_t dev_addr) { // application tear-down - printf("\na Mouse device (address %d) is unmounted\n", dev_addr); + printf("A Mouse device (address %d) is unmounted\r\n", dev_addr); } // invoked ISR context |