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Handle USBTMC TermChar.

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This commit is contained in:
Nathan Conrad 2019-09-14 17:15:34 -04:00
parent acd8fa7650
commit 6e00886ffb
1 changed files with 18 additions and 0 deletions
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18
src/class/usbtmc/usbtmc_device.c
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@ -61,6 +61,9 @@
// FIXME: I shouldn't need to include _pvt headers.
#include "device/usbd_pvt.h"
static uint8_t termChar;
static uint8_t termCharRequested = false;
typedef enum
{
STATE_IDLE,
@ -113,6 +116,13 @@ bool usbtmcd_transmit_dev_msg_data(
TU_ASSERT(usbtmc_state.state == STATE_TX_REQUESTED);
TU_ASSERT(hdr->TransferSize > 0u);
if(hdr->bmTransferAttributes.UsingTermChar)
{
TU_ASSERT(usbtmcd_app_capabilities.bmDevCapabilities.canEndBulkInOnTermChar);
TU_ASSERT(termCharRequested);
TU_ASSERT(((uint8_t*)data)[hdr->TransferSize-1] == termChar);
}
// Copy in the header
memcpy(usbtmc_state.ep_bulk_in_buf, hdr, sizeof(*hdr));
uint packetLen = sizeof(*hdr);
@ -260,6 +270,12 @@ static bool handle_devMsgIn(uint8_t rhport, void *data, size_t len)
TU_VERIFY(usbtmc_state.state == STATE_IDLE);
usbtmc_state.state = STATE_TX_REQUESTED;
usbtmc_state.transfer_size_remaining = msg->TransferSize;
termCharRequested = msg->bmTransferAttributes.TermCharEnabled;
termChar = msg->TermChar;
if(termCharRequested)
TU_VERIFY(usbtmcd_app_capabilities.bmDevCapabilities.canEndBulkInOnTermChar);
TU_VERIFY(usbtmcd_app_msgBulkIn_request(rhport, msg));
return true;
}
@ -310,6 +326,8 @@ bool usbtmcd_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint
TU_VERIFY(handle_devMsgOut(rhport, usbtmc_state.ep_bulk_out_buf, xferred_bytes, xferred_bytes));
return true;
case STATE_TX_REQUESTED:
case STATE_TX_INITIATED:
default:
TU_VERIFY(false);
}