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min on cdc r/w

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tswan-quasi 2023-08-14 08:49:52 -04:00
parent 92457ec99f
commit bd51afb091
1 changed files with 2 additions and 2 deletions
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4
src/class/cdc/cdc_device.c
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@ -150,7 +150,7 @@ uint32_t tud_cdc_n_available(uint8_t itf)
uint32_t tud_cdc_n_read(uint8_t itf, void* buffer, uint32_t bufsize) uint32_t tud_cdc_n_read(uint8_t itf, void* buffer, uint32_t bufsize)
{ {
cdcd_interface_t* p_cdc = &_cdcd_itf[itf]; cdcd_interface_t* p_cdc = &_cdcd_itf[itf];
uint32_t num_read = tu_fifo_read_n(&p_cdc->rx_ff, buffer, (uint16_t) bufsize); uint32_t num_read = tu_fifo_read_n(&p_cdc->rx_ff, buffer, (uint16_t) TU_MIN(bufsize, 65535));
_prep_out_transaction(p_cdc); _prep_out_transaction(p_cdc);
return num_read; return num_read;
} }
@ -173,7 +173,7 @@ void tud_cdc_n_read_flush (uint8_t itf)
uint32_t tud_cdc_n_write(uint8_t itf, void const* buffer, uint32_t bufsize) uint32_t tud_cdc_n_write(uint8_t itf, void const* buffer, uint32_t bufsize)
{ {
cdcd_interface_t* p_cdc = &_cdcd_itf[itf]; cdcd_interface_t* p_cdc = &_cdcd_itf[itf];
uint16_t ret = tu_fifo_write_n(&p_cdc->tx_ff, buffer, (uint16_t) bufsize); uint16_t ret = tu_fifo_write_n(&p_cdc->tx_ff, buffer, (uint16_t) TU_MIN(bufsize, 65535));
// flush if queue more than packet size // flush if queue more than packet size
// may need to suppress -Wunreachable-code since most of the time CFG_TUD_CDC_TX_BUFSIZE < BULK_PACKET_SIZE // may need to suppress -Wunreachable-code since most of the time CFG_TUD_CDC_TX_BUFSIZE < BULK_PACKET_SIZE