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New function to modify fifo overwritability

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This commit is contained in:
Jan Dümpelmann 2020-09-03 17:21:32 +02:00
parent fd6cf9010b
commit 4071e490e2
3 changed files with 21 additions and 1 deletions
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2
src/class/cdc/cdc_device.c
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@ -356,7 +356,7 @@ bool cdcd_control_request(uint8_t rhport, tusb_control_request_t const * request
p_cdc->line_state = (uint8_t) request->wValue;
// Disable fifo overwriting if DTR bit is set
p_cdc->tx_ff.overwritable = dtr ? false : true;
tu_fifo_change_mode(&p_cdc->tx_ff, (dtr?false:true));
TU_LOG2(" Set Control Line State: DTR = %d, RTS = %d\r\n", dtr, rts);

19
src/common/tusb_fifo.c
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@ -319,3 +319,22 @@ bool tu_fifo_clear(tu_fifo_t *f)
return true;
}
/******************************************************************************/
/*!
@brief Change the fifo mode to overwritable or not overwritable
@param[in] f
Pointer to the FIFO buffer to manipulate
*/
/******************************************************************************/
bool tu_fifo_change_mode(tu_fifo_t *f, bool overwritable)
{
tu_fifo_lock(f);
f->overwritable = overwritable;
tu_fifo_unlock(f);
return true;
}

1
src/common/tusb_fifo.h
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@ -76,6 +76,7 @@ typedef struct
.overwritable = _overwritable, \
}
bool tu_fifo_change_mode(tu_fifo_t *f, bool overwritable);
bool tu_fifo_clear(tu_fifo_t *f);
bool tu_fifo_config(tu_fifo_t *f, void* buffer, uint16_t depth, uint16_t item_size, bool overwritable);