add synchronous (blocking) support for usbh control transfer
- add synchronous version of all get descriptor API - update bare example to use sync API for string descriptor - change order of index, language_id in tuh_descriptor_get_string() to match similar API of libusb - add index to tuh_descriptor_get_hid_report()
This commit is contained in:
hathach
172
src/host/usbh.c
172
src/host/usbh.c
@@ -243,7 +243,7 @@ struct
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{
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tuh_control_xfer_t xfer;
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uint8_t daddr; // device address that is transferring
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uint8_t stage;
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volatile uint8_t stage;
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}_ctrl_xfer;
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//------------- Helper Function -------------//
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@@ -300,8 +300,8 @@ void osal_task_delay(uint32_t msec)
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// Descriptors
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//--------------------------------------------------------------------+
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bool tuh_descriptor_get(uint8_t daddr, uint8_t type, uint8_t index, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg)
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static bool _get_descriptor(uint8_t daddr, uint8_t type, uint8_t index, uint16_t language_id, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg)
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{
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tuh_control_xfer_t const xfer =
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{
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@@ -315,7 +315,7 @@ bool tuh_descriptor_get(uint8_t daddr, uint8_t type, uint8_t index, void* buffer
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},
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.bRequest = TUSB_REQ_GET_DESCRIPTOR,
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.wValue = tu_htole16( TU_U16(type, index) ),
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.wIndex = 0,
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.wIndex = tu_htole16(language_id),
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.wLength = tu_htole16(len)
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},
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@@ -327,6 +327,12 @@ bool tuh_descriptor_get(uint8_t daddr, uint8_t type, uint8_t index, void* buffer
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return tuh_control_xfer(daddr, &xfer);
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}
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bool tuh_descriptor_get(uint8_t daddr, uint8_t type, uint8_t index, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg)
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{
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return _get_descriptor(daddr, type, index, 0x0000, buffer, len, complete_cb, user_arg);
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}
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bool tuh_descriptor_get_device(uint8_t daddr, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg)
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{
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@@ -340,31 +346,12 @@ bool tuh_descriptor_get_configuration(uint8_t daddr, uint8_t index, void* buffer
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return tuh_descriptor_get(daddr, TUSB_DESC_CONFIGURATION, index, buffer, len, complete_cb, user_arg);
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}
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bool tuh_descriptor_get_string(uint8_t daddr, uint16_t language_id, uint8_t index, void* buffer, uint16_t len,
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//------------- String Descriptor -------------//
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bool tuh_descriptor_get_string(uint8_t daddr, uint8_t index, uint16_t language_id, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg)
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{
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tuh_control_xfer_t const xfer =
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{
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.request =
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{
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.bmRequestType_bit =
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{
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.recipient = TUSB_REQ_RCPT_DEVICE,
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.type = TUSB_REQ_TYPE_STANDARD,
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.direction = TUSB_DIR_IN
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},
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.bRequest = TUSB_REQ_GET_DESCRIPTOR,
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.wValue = tu_htole16( TU_U16(TUSB_DESC_STRING, index) ),
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.wIndex = tu_htole16(language_id),
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.wLength = tu_htole16(len)
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},
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.buffer = buffer,
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.complete_cb = complete_cb,
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.user_arg = user_arg
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};
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return tuh_control_xfer(daddr, &xfer);
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return _get_descriptor(daddr, TUSB_DESC_STRING, index, language_id, buffer, len, complete_cb, user_arg);
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}
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// Get manufacturer string descriptor
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@@ -376,7 +363,7 @@ bool tuh_descriptor_get_manufacturer_string(uint8_t daddr, uint16_t language_id,
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if (dev->i_manufacturer == 0) {
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return false;
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}
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return tuh_descriptor_get_string(daddr, language_id, dev->i_manufacturer, buffer, len, complete_cb, user_arg);
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return tuh_descriptor_get_string(daddr, dev->i_manufacturer, language_id, buffer, len, complete_cb, user_arg);
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}
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// Get product string descriptor
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@@ -388,7 +375,7 @@ bool tuh_descriptor_get_product_string(uint8_t daddr, uint16_t language_id, void
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if (dev->i_product == 0) {
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return false;
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}
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return tuh_descriptor_get_string(daddr, language_id, dev->i_product, buffer, len, complete_cb, user_arg);
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return tuh_descriptor_get_string(daddr, dev->i_product, language_id, buffer, len, complete_cb, user_arg);
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}
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// Get serial string descriptor
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@@ -400,11 +387,11 @@ bool tuh_descriptor_get_serial_string(uint8_t daddr, uint16_t language_id, void*
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if (dev->i_serial == 0) {
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return false;
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}
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return tuh_descriptor_get_string(daddr, language_id, dev->i_serial, buffer, len, complete_cb, user_arg);
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return tuh_descriptor_get_string(daddr, dev->i_serial, language_id, buffer, len, complete_cb, user_arg);
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}
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// Get HID report descriptor
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bool tuh_descriptor_get_hid_report(uint8_t daddr, uint8_t itf_num, uint8_t desc_type, void* buffer, uint16_t len,
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bool tuh_descriptor_get_hid_report(uint8_t daddr, uint8_t itf_num, uint8_t desc_type, uint8_t index, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg)
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{
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TU_LOG2("HID Get Report Descriptor\r\n");
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@@ -419,8 +406,8 @@ bool tuh_descriptor_get_hid_report(uint8_t daddr, uint8_t itf_num, uint8_t desc_
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.direction = TUSB_DIR_IN
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},
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.bRequest = TUSB_REQ_GET_DESCRIPTOR,
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.wValue = tu_htole16(TU_U16(desc_type, 0)),
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.wIndex = itf_num,
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.wValue = tu_htole16(TU_U16(desc_type, index)),
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.wIndex = tu_htole16((uint16_t) itf_num),
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.wLength = len
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},
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@@ -461,6 +448,58 @@ bool tuh_configuration_set(uint8_t daddr, uint8_t config_num,
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return tuh_control_xfer(daddr, &xfer);
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}
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//--------------------------------------------------------------------+
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// Asynchronous
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//--------------------------------------------------------------------+
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#define _CONTROL_SYNC_API(_async_func, _timeout, ...) \
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(void) _timeout; \
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xfer_result_t result = XFER_RESULT_INVALID;\
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/* TODO use timeout to wait */ \
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TU_VERIFY(_async_func(__VA_ARGS__, NULL, (uintptr_t) &result), XFER_RESULT_TIMEOUT); \
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return (uint8_t) result
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uint8_t tuh_descriptor_get_sync(uint8_t daddr, uint8_t type, uint8_t index, void* buffer, uint16_t len, uint8_t timeout_ms)
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{
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_CONTROL_SYNC_API(tuh_descriptor_get, timeout_ms, daddr, type, index, buffer, len);
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}
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uint8_t tuh_descriptor_get_device_sync(uint8_t daddr, void* buffer, uint16_t len, uint8_t timeout_ms)
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{
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len = tu_min16(len, sizeof(tusb_desc_device_t));
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return tuh_descriptor_get_sync(daddr, TUSB_DESC_DEVICE, 0, buffer, len, timeout_ms);
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}
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uint8_t tuh_descriptor_get_configuration_sync(uint8_t daddr, uint8_t index, void* buffer, uint16_t len, uint8_t timeout_ms)
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{
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return tuh_descriptor_get_sync(daddr, TUSB_DESC_CONFIGURATION, index, buffer, len, timeout_ms);
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}
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uint8_t tuh_descriptor_get_hid_report_sync(uint8_t daddr, uint8_t itf_num, uint8_t desc_type, uint8_t index, void* buffer, uint16_t len, uint8_t timeout_ms)
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{
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_CONTROL_SYNC_API(tuh_descriptor_get_hid_report, timeout_ms, daddr, itf_num, desc_type, index, buffer, len);
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}
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uint8_t tuh_descriptor_get_string_sync(uint8_t daddr, uint8_t index, uint16_t language_id, void* buffer, uint16_t len, uint8_t timeout_ms)
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{
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_CONTROL_SYNC_API(tuh_descriptor_get_string, timeout_ms, daddr, index, language_id, buffer, len);
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}
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uint8_t tuh_descriptor_get_manufacturer_string_sync(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len, uint8_t timeout_ms)
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{
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_CONTROL_SYNC_API(tuh_descriptor_get_manufacturer_string, timeout_ms, daddr, language_id, buffer, len);
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}
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uint8_t tuh_descriptor_get_product_string_sync(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len, uint8_t timeout_ms)
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{
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_CONTROL_SYNC_API(tuh_descriptor_get_product_string, timeout_ms, daddr, language_id, buffer, len);
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}
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uint8_t tuh_descriptor_get_serial_string_sync(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len, uint8_t timeout_ms)
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{
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_CONTROL_SYNC_API(tuh_descriptor_get_serial_string, timeout_ms, daddr, language_id, buffer, len);
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}
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//--------------------------------------------------------------------+
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// CLASS-USBD API (don't require to verify parameters)
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//--------------------------------------------------------------------+
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@@ -833,11 +872,22 @@ bool usbh_edpt_busy(uint8_t dev_addr, uint8_t ep_addr)
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// Control transfer
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//--------------------------------------------------------------------+
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static bool _control_blocking_complete_cb(uint8_t daddr, tuh_control_xfer_t const * xfer, xfer_result_t result)
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{
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(void) daddr;
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// update result
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*((xfer_result_t*) xfer->user_arg) = result;
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return true;
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}
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bool tuh_control_xfer (uint8_t daddr, tuh_control_xfer_t const* xfer)
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{
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// pre-check to help reducing mutex lock
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TU_VERIFY(_ctrl_xfer.stage == CONTROL_STAGE_IDLE);
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// TODO probably better to use semaphore as resource management than mutex
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usbh_lock();
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bool const is_idle = (_ctrl_xfer.stage == CONTROL_STAGE_IDLE);
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@@ -855,7 +905,52 @@ bool tuh_control_xfer (uint8_t daddr, tuh_control_xfer_t const* xfer)
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_ctrl_xfer.daddr = daddr;
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_ctrl_xfer.xfer = (*xfer);
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return hcd_setup_send(rhport, daddr, (uint8_t*) &_ctrl_xfer.xfer.request);
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if (xfer->complete_cb)
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{
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TU_ASSERT( hcd_setup_send(rhport, daddr, (uint8_t*) &_ctrl_xfer.xfer.request) );
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}else
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{
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// user_arg must point to xfer_result_t to hold result
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TU_VERIFY(xfer->user_arg);
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// blocking if complete callback is not provided
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// change callback to internal blocking, and result as user argument
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volatile xfer_result_t* result = (volatile xfer_result_t*) xfer->user_arg;
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_ctrl_xfer.xfer.complete_cb = _control_blocking_complete_cb;
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*result = XFER_RESULT_INVALID;
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TU_ASSERT( hcd_setup_send(rhport, daddr, (uint8_t*) &_ctrl_xfer.xfer.request) );
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while ((*result) == XFER_RESULT_INVALID)
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{
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// only need to call task if not preempted RTOS
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#if CFG_TUSB_OS == OPT_OS_NONE || CFG_TUSB_OS == OPT_OS_PICO
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tuh_task();
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#endif
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// TODO probably some timeout to prevent hanged
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}
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}
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return true;
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}
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uint8_t tuh_control_xfer_sync(uint8_t daddr, tuh_control_xfer_t const* xfer, uint32_t timeout_ms)
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{
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(void) timeout_ms;
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xfer_result_t result = XFER_RESULT_INVALID;
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tuh_control_xfer_t xfer_sync = (*xfer);
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xfer_sync.complete_cb = NULL;
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xfer_sync.user_arg = (uintptr_t) &result;
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// TODO use timeout to wait
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TU_VERIFY(tuh_control_xfer(daddr, &xfer_sync), XFER_RESULT_TIMEOUT);
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return result;
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}
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TU_ATTR_ALWAYS_INLINE static inline void set_control_xfer_stage(uint8_t stage)
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@@ -869,15 +964,16 @@ static void _xfer_complete(uint8_t dev_addr, xfer_result_t result)
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{
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TU_LOG2("\r\n");
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// duplicate xfer since user can execute control transfer within callback
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tuh_control_xfer_t const xfer_temp = _ctrl_xfer.xfer;
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usbh_lock();
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_ctrl_xfer.stage = CONTROL_STAGE_IDLE;
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usbh_unlock();
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if (_ctrl_xfer.xfer.complete_cb)
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if (xfer_temp.complete_cb)
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{
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// duplicate xfer since user can execute control transfer within callback
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tuh_control_xfer_t const xfer_temp = _ctrl_xfer.xfer;
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_ctrl_xfer.xfer.complete_cb(dev_addr, &xfer_temp, result);
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xfer_temp.complete_cb(dev_addr, &xfer_temp, result);
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}
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}
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@@ -52,6 +52,18 @@ struct tuh_control_xfer_s
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uintptr_t user_arg;
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};
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//--------------------------------------------------------------------+
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// APPLICATION CALLBACK
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//--------------------------------------------------------------------+
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//TU_ATTR_WEAK uint8_t tuh_attach_cb (tusb_desc_device_t const *desc_device);
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// Invoked when device is mounted (configured)
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TU_ATTR_WEAK void tuh_mount_cb (uint8_t daddr);
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/// Invoked when device is unmounted (bus reset/unplugged)
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TU_ATTR_WEAK void tuh_umount_cb(uint8_t daddr);
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//--------------------------------------------------------------------+
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// APPLICATION API
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//--------------------------------------------------------------------+
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@@ -93,65 +105,101 @@ static inline bool tuh_ready(uint8_t daddr)
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}
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// Carry out a control transfer
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// true on success, false if there is on-going control transfer
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// Note: function is blocking if complete callback is NULL
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// true on success, false if there is on-going control transfer or incorrect parameters
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// Blocking if complete callback is NULL, in this case 'user_arg' must contain xfer_result_t variable
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bool tuh_control_xfer (uint8_t daddr, tuh_control_xfer_t const* xfer);
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// Carry out a control transfer
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// true on success, false if there is on-going control transfer
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// Note: function is blocking if complete callback is NULL
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//bool tuh_control_xfer (uint8_t daddr, tusb_control_request_t const* request, void* buffer,
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// tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg);
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// Sync (blocking) version of tuh_control_xfer()
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// return transfer result
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uint8_t tuh_control_xfer_sync(uint8_t daddr, tuh_control_xfer_t const* xfer, uint32_t timeout_ms);
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// Set Configuration
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// Set Configuration (control transfer)
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// config_num = 0 will un-configure device. Note: config_num = config_descriptor_index + 1
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// true on success, false if there is on-going control transfer or incorrect parameters
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// Blocking if complete callback is NULL, in this case 'user_arg' must contain xfer_result_t variable
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bool tuh_configuration_set(uint8_t daddr, uint8_t config_num,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg);
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//------------- descriptors -------------//
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//--------------------------------------------------------------------+
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// Descriptors Asynchronous (non-blocking)
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//--------------------------------------------------------------------+
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// Get an descriptor
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// Get an descriptor (control transfer)
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// true on success, false if there is on-going control transfer or incorrect parameters
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bool tuh_descriptor_get(uint8_t daddr, uint8_t type, uint8_t index, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg);
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// Get device descriptor
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// Get device descriptor (control transfer)
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// true on success, false if there is on-going control transfer or incorrect parameters
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bool tuh_descriptor_get_device(uint8_t daddr, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg);
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// Get configuration descriptor
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// Get configuration descriptor (control transfer)
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// true on success, false if there is on-going control transfer or incorrect parameters
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bool tuh_descriptor_get_configuration(uint8_t daddr, uint8_t index, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg);
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// Get HID report descriptor
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bool tuh_descriptor_get_hid_report(uint8_t daddr, uint8_t itf_num, uint8_t desc_type, void* buffer, uint16_t len,
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// Get HID report descriptor (control transfer)
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// true on success, false if there is on-going control transfer or incorrect parameters
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bool tuh_descriptor_get_hid_report(uint8_t daddr, uint8_t itf_num, uint8_t desc_type, uint8_t index, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg);
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// Get string descriptor
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bool tuh_descriptor_get_string(uint8_t daddr, uint16_t language_id, uint8_t index, void* buffer, uint16_t len,
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// Get string descriptor (control transfer)
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// true on success, false if there is on-going control transfer or incorrect parameters
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// Blocking if complete callback is NULL, in this case 'user_arg' must contain xfer_result_t variable
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bool tuh_descriptor_get_string(uint8_t daddr, uint8_t index, uint16_t language_id, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg);
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// Get manufacturer string descriptor
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// Get manufacturer string descriptor (control transfer)
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// true on success, false if there is on-going control transfer or incorrect parameters
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bool tuh_descriptor_get_manufacturer_string(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg);
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// Get product string descriptor
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// Get product string descriptor (control transfer)
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// true on success, false if there is on-going control transfer or incorrect parameters
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bool tuh_descriptor_get_product_string(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len,
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tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg);
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// Get serial string descriptor
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||||
// Get serial string descriptor (control transfer)
|
||||
// true on success, false if there is on-going control transfer or incorrect parameters
|
||||
bool tuh_descriptor_get_serial_string(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len,
|
||||
tuh_control_xfer_cb_t complete_cb, uintptr_t user_arg);
|
||||
|
||||
//--------------------------------------------------------------------+
|
||||
// APPLICATION CALLBACK
|
||||
// Descriptors Synchronous (blocking)
|
||||
//--------------------------------------------------------------------+
|
||||
//TU_ATTR_WEAK uint8_t tuh_attach_cb (tusb_desc_device_t const *desc_device);
|
||||
|
||||
// Invoked when device is mounted (configured)
|
||||
TU_ATTR_WEAK void tuh_mount_cb (uint8_t daddr);
|
||||
// Sync (blocking) version of tuh_descriptor_get()
|
||||
// return transfer result
|
||||
uint8_t tuh_descriptor_get_sync(uint8_t daddr, uint8_t type, uint8_t index, void* buffer, uint16_t len, uint8_t timeout_ms);
|
||||
|
||||
/// Invoked when device is unmounted (bus reset/unplugged)
|
||||
TU_ATTR_WEAK void tuh_umount_cb(uint8_t daddr);
|
||||
// Sync (blocking) version of tuh_descriptor_get_device()
|
||||
// return transfer result
|
||||
uint8_t tuh_descriptor_get_device_sync(uint8_t daddr, void* buffer, uint16_t len, uint8_t timeout_ms);
|
||||
|
||||
// Sync (blocking) version of tuh_descriptor_get_configuration()
|
||||
// return transfer result
|
||||
uint8_t tuh_descriptor_get_configuration_sync(uint8_t daddr, uint8_t index, void* buffer, uint16_t len, uint8_t timeout_ms);
|
||||
|
||||
// Sync (blocking) version of tuh_descriptor_get_hid_report()
|
||||
// return transfer result
|
||||
uint8_t tuh_descriptor_get_hid_report_sync(uint8_t daddr, uint8_t itf_num, uint8_t desc_type, uint8_t index, void* buffer, uint16_t len, uint8_t timeout_ms);
|
||||
|
||||
// Sync (blocking) version of tuh_descriptor_get_string()
|
||||
// return transfer result
|
||||
uint8_t tuh_descriptor_get_string_sync(uint8_t daddr, uint8_t index, uint16_t language_id, void* buffer, uint16_t len, uint8_t timeout_ms);
|
||||
|
||||
// Sync (blocking) version of tuh_descriptor_get_manufacturer_string()
|
||||
// return transfer result
|
||||
uint8_t tuh_descriptor_get_manufacturer_string_sync(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len, uint8_t timeout_ms);
|
||||
|
||||
// Sync (blocking) version of tuh_descriptor_get_product_string()
|
||||
// return transfer result
|
||||
uint8_t tuh_descriptor_get_product_string_sync(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len, uint8_t timeout_ms);
|
||||
|
||||
// Sync (blocking) version of tuh_descriptor_get_serial_string()
|
||||
// return transfer result
|
||||
uint8_t tuh_descriptor_get_serial_string_sync(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len, uint8_t timeout_ms);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user