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update dfu_moded_open

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This commit is contained in:
hathach 2021-07-12 18:48:33 +07:00
parent 10a7e0502a
commit a0691a4fd4
1 changed files with 21 additions and 41 deletions
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62
src/class/dfu/dfu_device.c
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@ -49,7 +49,6 @@ typedef struct TU_ATTR_PACKED
uint8_t attrs;
bool blk_transfer_in_proc;
uint8_t alt;
uint8_t intf;
uint16_t block;
uint16_t length;
CFG_TUSB_MEM_ALIGN uint8_t transfer_buf[CFG_TUD_DFU_TRANSFER_BUFFER_SIZE];
@ -153,7 +152,6 @@ void dfu_moded_init(void)
_dfu_state_ctx.attrs = 0;
_dfu_state_ctx.blk_transfer_in_proc = false;
_dfu_state_ctx.alt = 0;
_dfu_state_ctx.intf = DFU_INTF_UNUSED;
dfu_debug_print_context();
}
@ -167,7 +165,6 @@ void dfu_moded_reset(uint8_t rhport)
_dfu_state_ctx.attrs = 0;
_dfu_state_ctx.blk_transfer_in_proc = false;
_dfu_state_ctx.alt = 0;
_dfu_state_ctx.intf = DFU_INTF_UNUSED;
dfu_debug_print_context();
}
@ -176,55 +173,38 @@ uint16_t dfu_moded_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc,
{
(void) rhport;
uint16_t const drv_len = sizeof(tusb_desc_interface_t);
//------------- Interface (with Alt) descriptor -------------//
uint8_t const itf_num = itf_desc->bInterfaceNumber;
uint8_t alt_count = 0;
uint8_t const *p_desc = (uint8_t const *)itf_desc;
uint16_t total_len = 0;
uint8_t last_alt = 0;
while(max_len > drv_len)
uint16_t drv_len = 0;
while(itf_desc->bInterfaceSubClass == TUD_DFU_APP_SUBCLASS && itf_desc->bInterfaceProtocol == DFU_PROTOCOL_DFU)
{
// Ensure this is DFU Mode
TU_VERIFY((((tusb_desc_interface_t const *)p_desc)->bInterfaceSubClass == TUD_DFU_APP_SUBCLASS) &&
(((tusb_desc_interface_t const *)p_desc)->bInterfaceProtocol == DFU_PROTOCOL_DFU), 0);
TU_ASSERT(max_len > drv_len, 0);
uint8_t const alt = ((tusb_desc_interface_t const *)p_desc)->bAlternateSetting;
uint8_t const intf = ((tusb_desc_interface_t const *)p_desc)->bInterfaceNumber;
// Alternate must have the same interface number
TU_ASSERT(itf_desc->bInterfaceNumber == itf_num, 0);
if (_dfu_state_ctx.intf == DFU_INTF_UNUSED)
{
_dfu_state_ctx.intf = intf;
}
else
{
// Only one DFU interface is supported
TU_ASSERT(_dfu_state_ctx.intf == intf, 0);
}
// Alt should increase by one every time
TU_ASSERT(itf_desc->bAlternateSetting == alt_count, 0);
alt_count++;
// CFG_TUD_DFU_ATL_MAX should big enough to hold all alt settings
TU_ASSERT(alt < CFG_TUD_DFU_ALT_COUNT, 0);
// Alt should increse by one every time
TU_ASSERT(alt == last_alt++, 0);
p_desc = tu_desc_next(p_desc);
max_len -= drv_len;
total_len += drv_len;
drv_len += tu_desc_len(itf_desc);
itf_desc = (tusb_desc_interface_t const *) tu_desc_next(itf_desc);
}
//------------- DFU descriptor -------------//
TU_ASSERT(tu_desc_type(p_desc) == TUSB_DESC_FUNCTIONAL, 0);
//------------- DFU Functional descriptor -------------//
tusb_desc_dfu_functional_t const *func_desc = (tusb_desc_dfu_functional_t const *) itf_desc;
TU_ASSERT(tu_desc_type(func_desc) == TUSB_DESC_FUNCTIONAL, 0);
drv_len += sizeof(tusb_desc_dfu_functional_t);
_dfu_state_ctx.attrs = ((tusb_desc_dfu_functional_t const *)p_desc)->bAttributes;
_dfu_state_ctx.attrs = func_desc->bAttributes;
// CFG_TUD_DFU_TRANSFER_BUFFER_SIZE has to be set to the buffer size used in TUD_DFU_MODE_DESCRIPTOR
TU_ASSERT(((tusb_desc_dfu_functional_t const *)p_desc)->wTransferSize <= CFG_TUD_DFU_TRANSFER_BUFFER_SIZE, 0);
uint16_t const transfer_size = tu_le16toh( tu_unaligned_read16(&func_desc->wTransferSize) );
TU_ASSERT(transfer_size <= CFG_TUD_DFU_TRANSFER_BUFFER_SIZE, drv_len);
total_len += sizeof(tusb_desc_dfu_functional_t);
return total_len;
return drv_len;
}
// Invoked when a control transfer occurred on an interface of this class