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Add tud_vendor_n_write_zlp_if_needed to write zlp when TX FIFO disabled. #3403

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Add tud_vendor_n_write_zlp_if_needed to write zlp when TX FIFO disabled. #3403

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36480e4
Add tud_vendor_n_write_zlp_if_needed to write zlp when TX FIFO disabled.
gogogoghost Dec 10, 2025
f6d908d
Add macro checks to `tud_vendor_n_write_zlp_if_needed`.
gogogoghost Dec 10, 2025
b74d309
Remove extra spaces
gogogoghost Dec 10, 2025
2914114
Remove extra spaces
gogogoghost Dec 10, 2025
ccc27ab
Merge branch 'hathach:master' into master
gogogoghost Dec 12, 2025
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6 changes: 6 additions & 0 deletions src/class/vendor/vendor_device.c
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Original file line number Diff line number Diff line change
Expand Up @@ -166,6 +166,12 @@ uint32_t tud_vendor_n_write_available(uint8_t idx) {
vendord_interface_t *p_itf = &_vendord_itf[idx];
return tu_edpt_stream_write_available(p_itf->rhport, &p_itf->stream.tx);
}
#else
bool tud_vendor_n_write_zlp_if_needed(uint8_t idx, uint32_t last_xferred_bytes) {
TU_VERIFY(idx < CFG_TUD_VENDOR, 0);
vendord_interface_t *p_itf = &_vendord_itf[idx];
return tu_edpt_stream_write_zlp_if_needed(p_itf->rhport, &p_itf->stream.tx, last_xferred_bytes);
}
#endif

//--------------------------------------------------------------------+
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7 changes: 7 additions & 0 deletions src/class/vendor/vendor_device.h
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Expand Up @@ -94,6 +94,9 @@ uint32_t tud_vendor_n_write_flush(uint8_t idx);

// Return number of bytes available for writing in TX FIFO
uint32_t tud_vendor_n_write_available(uint8_t idx);
#else
// TX FIFO disabled, write zlp manually.
bool tud_vendor_n_write_zlp_if_needed(uint8_t idx, uint32_t last_xferred_bytes);
#endif

// Write a null-terminated string to TX FIFO
Expand Down Expand Up @@ -155,6 +158,10 @@ TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_vendor_write_flush(void) {
TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_vendor_write_available(void) {
return tud_vendor_n_write_available(0);
}
#else
TU_ATTR_ALWAYS_INLINE static inline bool tud_vendor_write_zlp_if_needed(uint32_t last_xferred_bytes) {
return tud_vendor_n_write_zlp_if_needed(0, last_xferred_bytes);
}
#endif

// backward compatible
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