diff options
Diffstat (limited to 'src/tusb.c')
| -rw-r--r-- | src/tusb.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/tusb.c b/src/tusb.c index 9303e9bc4..13b89997c 100644 --- a/src/tusb.c +++ b/src/tusb.c @@ -205,7 +205,7 @@ bool tu_edpt_release(tu_edpt_state_t* ep_state, osal_mutex_t mutex) { return ret; } -bool tu_edpt_validate(tusb_desc_endpoint_t const* desc_ep, tusb_speed_t speed) { +bool tu_edpt_validate(tusb_desc_endpoint_t const* desc_ep, tusb_speed_t speed, bool is_host) { uint16_t const max_packet_size = tu_edpt_packet_size(desc_ep); TU_LOG2(" Open EP %02X with Size = %u\r\n", desc_ep->bEndpointAddress, max_packet_size); @@ -221,8 +221,17 @@ bool tu_edpt_validate(tusb_desc_endpoint_t const* desc_ep, tusb_speed_t speed) { // Bulk highspeed must be EXACTLY 512 TU_ASSERT(max_packet_size == 512); } else { - // TODO Bulk fullspeed can only be 8, 16, 32, 64 - TU_ASSERT(max_packet_size <= 64); + // Bulk fullspeed can only be 8, 16, 32, 64 + if (is_host && max_packet_size == 512) { + // HACK: while in host mode, some device incorrectly always report 512 regardless of link speed + // overwrite descriptor to force 64 + TU_LOG1(" WARN: EP max packet size is 512 in fullspeed, force to 64\r\n"); + tusb_desc_endpoint_t* hacked_ep = (tusb_desc_endpoint_t*) (uintptr_t) desc_ep; + hacked_ep->wMaxPacketSize = tu_htole16(64); + } else { + TU_ASSERT(max_packet_size == 8 || max_packet_size == 16 || + max_packet_size == 32 || max_packet_size == 64); + } } break; |