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Respond to other OUT control requests with a ZLP

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This commit is contained in:
Julien Bernard 2021-03-22 14:27:34 +01:00 committed by Graham Sanderson
parent 6c6881a2a1
commit 1813f81b12
1 changed files with 10 additions and 2 deletions
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12
usb/device/dev_lowlevel/dev_lowlevel.c
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@ -340,6 +340,13 @@ void usb_handle_string_descriptor(volatile struct usb_setup_packet *pkt) {
usb_start_transfer(usb_get_endpoint_configuration(EP0_IN_ADDR), &ep0_buf[0], len);
}
/**
* @brief Sends a zero length status packet back to the host.
*/
void usb_acknowledge_out_request(void) {
usb_start_transfer(usb_get_endpoint_configuration(EP0_IN_ADDR), NULL, 0);
}
/**
* @brief Handles a SET_ADDR request from the host. The actual setting of the device address in
* hardware is done in ep0_in_handler. This is because we have to acknowledge the request first
@ -354,7 +361,7 @@ void usb_set_device_address(volatile struct usb_setup_packet *pkt) {
printf("Set address %d\r\n", dev_addr);
// Will set address in the callback phase
should_set_address = true;
usb_start_transfer(usb_get_endpoint_configuration(EP0_IN_ADDR), NULL, 0);
usb_acknowledge_out_request();
}
/**
@ -366,7 +373,7 @@ void usb_set_device_address(volatile struct usb_setup_packet *pkt) {
void usb_set_device_configuration(volatile struct usb_setup_packet *pkt) {
// Only one configuration so just acknowledge the request
printf("Device Enumerated\r\n");
usb_start_transfer(usb_get_endpoint_configuration(EP0_IN_ADDR), NULL, 0);
usb_acknowledge_out_request();
configured = true;
}
@ -388,6 +395,7 @@ void usb_handle_setup_packet(void) {
} else if (req == USB_REQUEST_SET_CONFIGURATION) {
usb_set_device_configuration(pkt);
} else {
usb_acknowledge_out_request();
printf("Other OUT request (0x%x)\r\n", pkt->bRequest);
}
} else if (req_direction == USB_DIR_IN) {