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samples: usb: hid: remote wakeup in HID mouse example

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Added support for remote wakeup in hid_mouse example.
If rempote wakeup support is enabled, wakeup request
is performed on every button click when the bus in suspended state.

Signed-off-by: Paweł Zadrożniak <pawel.zadrozniak@nordicsemi.no>
This commit is contained in:
Paweł Zadrożniak 2019-02-12 09:28:59 +01:00 committed by Anas Nashif
parent 804b9e1ada
commit aa4c30c3e9
2 changed files with 29 additions and 2 deletions
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2
samples/subsys/usb/hid-mouse/README.rst
View file

@ -11,6 +11,8 @@ by the Zephyr project. This very simple driver enumerates a board with a button
into a mouse that has a left mouse button and optionally (depending on
the number of buttons on the board) a right mouse button, X-axis movement,
and Y-axis movement.
If the USB peripheral driver supports remote wakeup feature, wakeup request
will be performed on every button click if the bus is in suspended state.
This sample can be found under :file:`samples/subsys/usb/hid-mouse` in the
Zephyr project tree.

29
samples/subsys/usb/hid-mouse/src/main.c
View file

@ -83,6 +83,7 @@ static u32_t def_val[4];
static volatile u8_t status[4];
static K_SEM_DEFINE(sem, 0, 1); /* starts off "not available" */
static struct gpio_callback callback[4];
static enum usb_dc_status_code usb_status;
#define MOUSE_BTN_REPORT_POS 0
#define MOUSE_X_REPORT_POS 1
@ -93,12 +94,25 @@ static struct gpio_callback callback[4];
#define MOUSE_BTN_MIDDLE BIT(2)
static void status_cb(enum usb_dc_status_code status, const u8_t *param)
{
usb_status = status;
}
static void left_button(struct device *gpio, struct gpio_callback *cb,
u32_t pins)
{
u32_t cur_val;
u8_t state = status[MOUSE_BTN_REPORT_POS];
if (IS_ENABLED(CONFIG_USB_DEVICE_REMOTE_WAKEUP)) {
if (usb_status == USB_DC_SUSPEND) {
usb_wakeup_request();
return;
}
}
gpio_pin_read(gpio, PIN0, &cur_val);
if (def_val[0] != cur_val) {
state |= MOUSE_BTN_LEFT;
@ -119,6 +133,13 @@ static void right_button(struct device *gpio, struct gpio_callback *cb,
u32_t cur_val;
u8_t state = status[MOUSE_BTN_REPORT_POS];
if (IS_ENABLED(CONFIG_USB_DEVICE_REMOTE_WAKEUP)) {
if (usb_status == USB_DC_SUSPEND) {
usb_wakeup_request();
return;
}
}
gpio_pin_read(gpio, PIN1, &cur_val);
if (def_val[0] != cur_val) {
state |= MOUSE_BTN_RIGHT;
@ -240,8 +261,12 @@ void main(void)
}
#endif
usb_hid_register_device(hid_dev, hid_report_desc,
sizeof(hid_report_desc), NULL);
static const struct hid_ops ops = {
.status_cb = status_cb
};
usb_hid_register_device(hid_dev,
hid_report_desc, sizeof(hid_report_desc),
&ops);
usb_hid_init(hid_dev);
while (true) {