andy/tinyUSB
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Implement functions to allow for DMA usage in audio driver.

Browse Source 
- Add tud_audio_n_get_ep_out_ff(), tud_audio_n_get_ep_in_ff(),
tud_audio_n_get_rx_support_ff(), and tud_audio_n_get_tx_support_ff()
- Change get_linear_read/write_info() to return linear and wrapped part
at once
- Adjusted affected code in audio_device.c and tested with
audio_4_channel.
This commit is contained in:
Reinhard Panhuber
2021-04-23 10:27:48 +02:00
parent d8fd4352a3
commit 03f974c9b9
5 changed files with 103 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/common/tusb_fifo.h
View File

@@ -134,8 +134,10 @@ void tu_fifo_advance_read_pointer (tu_fifo_t *f, uint16_t n);
// This functions deliver a pointer to start reading/writing from/to and a valid linear length along which no wrap occurs.
// In case not all of your data is available within one read/write, update the read/write pointer by
// tu_fifo_advance_read_pointer()/tu_fifo_advance_write_pointer and conduct a second read/write operation
uint16_t tu_fifo_get_linear_read_info (tu_fifo_t *f, uint16_t offset, void **ptr, uint16_t n);
uint16_t tu_fifo_get_linear_write_info (tu_fifo_t *f, uint16_t offset, void **ptr, uint16_t n);
// TODO - update comments
uint16_t tu_fifo_get_linear_read_info(tu_fifo_t *f, uint16_t offset, uint16_t n, void **ptr_lin, uint16_t *len_wrap, void **ptr_wrap);
uint16_t tu_fifo_get_linear_write_info(tu_fifo_t *f, uint16_t offset, uint16_t n, void **ptr_lin, uint16_t *len_wrap, void **ptr_wrap);
static inline bool tu_fifo_peek(tu_fifo_t* f, void * p_buffer)
{