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-rw-r--r--include/driver/usbh_device_driver.h9
1 files changed, 6 insertions, 3 deletions
diff --git a/include/driver/usbh_device_driver.h b/include/driver/usbh_device_driver.h
index 6dd53c3..76e2619 100644
--- a/include/driver/usbh_device_driver.h
+++ b/include/driver/usbh_device_driver.h
@@ -129,7 +129,10 @@ typedef void (*usbh_packet_callback_t)(usbh_device_t *dev, usbh_packet_callback_
struct _usbh_packet {
/// pointer to data
- void *data;
+ union {
+ const void *out;
+ void *in;
+ } data;
/// length of the data (up to 1023)
uint16_t datalen;
@@ -234,8 +237,8 @@ void usbh_write(usbh_device_t *dev, const usbh_packet_t *packet);
/* Helper functions used by device drivers */
void device_xfer_control_read(void *data, uint16_t datalen, usbh_packet_callback_t callback, usbh_device_t *dev);
-void device_xfer_control_write_setup(void *data, uint16_t datalen, usbh_packet_callback_t callback, usbh_device_t *dev);
-void device_xfer_control_write_data(void *data, uint16_t datalen, usbh_packet_callback_t callback, usbh_device_t *dev);
+void device_xfer_control_write_setup(const void *data, uint16_t datalen, usbh_packet_callback_t callback, usbh_device_t *dev);
+void device_xfer_control_write_data(const void *data, uint16_t datalen, usbh_packet_callback_t callback, usbh_device_t *dev);
END_DECLS