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| author | Josh Rahm <joshuarahm@gmail.com> | 2020-11-23 19:41:05 -0700 |
|---|---|---|
| committer | Josh Rahm <joshuarahm@gmail.com> | 2020-11-23 19:41:05 -0700 |
| commit | 60b1e3055c179312eef809fe1d01f58042b64d5f (patch) | |
| tree | c620b5ca1eab2d05c9396637db50d0a110328d29 /02-usart/src/kern/dma/dma_manager.c | |
| parent | 2a6ae24ba769892993ec7a173c564f59feb06495 (diff) | |
| download | stm32l4-60b1e3055c179312eef809fe1d01f58042b64d5f.tar.gz stm32l4-60b1e3055c179312eef809fe1d01f58042b64d5f.tar.bz2 stm32l4-60b1e3055c179312eef809fe1d01f58042b64d5f.zip | |
Add new GPIO subsystem.
This gpio subsystem keeps track of the GPIO pins which
have been reserved and takes care of the housekeeping
with keeping them running.
This gpio subsystem also knows which alternate functions
belong to which pins, so it can automatically configure
the pins for the alternate functions.
Diffstat (limited to '02-usart/src/kern/dma/dma_manager.c')
| -rw-r--r-- | 02-usart/src/kern/dma/dma_manager.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/02-usart/src/kern/dma/dma_manager.c b/02-usart/src/kern/dma/dma_manager.c index 4336496..00e9f3d 100644 --- a/02-usart/src/kern/dma/dma_manager.c +++ b/02-usart/src/kern/dma/dma_manager.c @@ -75,7 +75,6 @@ static int try_reserve_dma_channel( return !(in_use & (1 << chan.chan)); } - // int in_use = __sync_fetch_and_or(&dma_inuse[dmasel], 1 << chan); void release_dma_channel(dma_channel_t chan) { dma_channel_config_t* config = get_raw_channel_config(chan); |