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USBTMC: Handle busy interrupt in.

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This commit is contained in:
NConrad 2022-06-26 14:34:34 -04:00
parent 239b5d5279
commit c675debfb2
2 changed files with 23 additions and 14 deletions
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5
src/class/usbtmc/usbtmc.h
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@ -189,7 +189,10 @@ typedef enum {
USBTMC_STATUS_FAILED = 0x80,
USBTMC_STATUS_TRANSFER_NOT_IN_PROGRESS = 0x81,
USBTMC_STATUS_SPLIT_NOT_IN_PROGRESS = 0x82,
USBTMC_STATUS_SPLIT_IN_PROGRESS = 0x83
USBTMC_STATUS_SPLIT_IN_PROGRESS = 0x83,
/****** USBTMC 488 *************/
USB488_STATUS_INTERRUPT_IN_BUSY = 0x20
} usbtmc_status_enum;
/************************************************************

32
src/class/usbtmc/usbtmc_device.c
View File

@ -831,26 +831,32 @@ bool usbtmcd_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request
bTag = request->wValue & 0x7F;
TU_VERIFY(request->bmRequestType == 0xA1);
TU_VERIFY((request->wValue & (~0x7F)) == 0u); // Other bits are required to be zero
TU_VERIFY((request->wValue & (~0x7F)) == 0u); // Other bits are required to be zero (USB488v1.0 Table 11)
TU_VERIFY(bTag >= 0x02 && bTag <= 127);
TU_VERIFY(request->wIndex == usbtmc_state.itf_id);
TU_VERIFY(request->wLength == 0x0003);
rsp.bTag = (uint8_t)bTag;
if(usbtmc_state.ep_int_in != 0)
{
rsp.USBTMC_status = USBTMC_STATUS_SUCCESS;
rsp.statusByte = 0x00; // Use interrupt endpoint, instead.
usbtmc_read_stb_interrupt_488_t intMsg =
rsp.statusByte = 0x00; // Use interrupt endpoint, instead. Must be 0x00 (USB488v1.0 4.3.1.2)
if(usbd_edpt_busy(rhport, usbtmc_state.ep_int_in))
{
.bNotify1 = {
.one = 1,
.bTag = bTag & 0x7Fu,
},
.StatusByte = tud_usbtmc_get_stb_cb(&(rsp.USBTMC_status))
};
// USB488 spec states that transfer must be queued before control request response sent.
usbd_edpt_xfer(rhport, usbtmc_state.ep_int_in, (void*)&intMsg, sizeof(intMsg));
rsp.USBTMC_status = USB488_STATUS_INTERRUPT_IN_BUSY;
}
else
{
rsp.USBTMC_status = USBTMC_STATUS_SUCCESS;
usbtmc_read_stb_interrupt_488_t intMsg =
{
.bNotify1 = {
.one = 1,
.bTag = bTag & 0x7Fu,
},
.StatusByte = tud_usbtmc_get_stb_cb(&(rsp.USBTMC_status))
};
// Must be queued before control request response sent (USB488v1.0 4.3.1.2)
usbd_edpt_xfer(rhport, usbtmc_state.ep_int_in, (void*)&intMsg, sizeof(intMsg));
}
}
else
{