alex/esp-idf
alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2024-10-05 20:47:46 -04:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

fix(rmt): fix gcc static analyzer warnings

Browse Source
This commit is contained in:
morris 2024-06-24 18:17:28 +08:00
parent e0991facf5
commit de7b7bc880
2 changed files with 23 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
components/esp_driver_rmt/src/rmt_private.h
View File

@ -64,7 +64,7 @@ extern "C" {
typedef dma_descriptor_align4_t rmt_dma_descriptor_t;
#ifdef CACHE_LL_L2MEM_NON_CACHE_ADDR
#define RMT_GET_NON_CACHE_ADDR(addr) ((addr) ? CACHE_LL_L2MEM_NON_CACHE_ADDR(addr) : 0)
#define RMT_GET_NON_CACHE_ADDR(addr) (CACHE_LL_L2MEM_NON_CACHE_ADDR(addr))
#else
#define RMT_GET_NON_CACHE_ADDR(addr) (addr)
#endif

41
components/esp_driver_rmt/src/rmt_tx.c
View File

@ -1098,27 +1098,30 @@ static void IRAM_ATTR rmt_tx_default_isr(void *args)
static bool IRAM_ATTR rmt_dma_tx_eof_cb(gdma_channel_handle_t dma_chan, gdma_event_data_t *event_data, void *user_data)
{
rmt_tx_channel_t *tx_chan = (rmt_tx_channel_t *)user_data;
// tx_eof_desc_addr must be non-zero, guaranteed by the hardware
rmt_dma_descriptor_t *eof_desc_nc = (rmt_dma_descriptor_t *)RMT_GET_NON_CACHE_ADDR(event_data->tx_eof_desc_addr);
rmt_dma_descriptor_t *n = (rmt_dma_descriptor_t *)RMT_GET_NON_CACHE_ADDR(eof_desc_nc->next); // next points to a cache address, needs to convert it to a non-cached one
if (n) {
rmt_dma_descriptor_t *nn = (rmt_dma_descriptor_t *)RMT_GET_NON_CACHE_ADDR(n->next);
// if the DMA descriptor link is still a ring (i.e. hasn't broken down by `rmt_tx_mark_eof()`), then we treat it as a valid ping-pong event
if (nn) {
// continue ping-pong transmission
rmt_tx_trans_desc_t *t = tx_chan->cur_trans;
size_t encoded_symbols = t->transmitted_symbol_num;
if (t->flags.encoding_done) {
rmt_tx_mark_eof(tx_chan);
encoded_symbols += 1;
} else {
encoded_symbols += rmt_encode_check_result(tx_chan, t);
}
t->transmitted_symbol_num = encoded_symbols;
tx_chan->mem_end = tx_chan->ping_pong_symbols * 3 - tx_chan->mem_end; // mem_end equals to either ping_pong_symbols or ping_pong_symbols*2
// tell DMA that we have a new descriptor attached
gdma_append(dma_chan);
}
if (!eof_desc_nc->next) {
return false;
}
// next points to a cache address, convert it to a non-cached one
rmt_dma_descriptor_t *n = (rmt_dma_descriptor_t *)RMT_GET_NON_CACHE_ADDR(eof_desc_nc->next);
if (!n->next) {
return false;
}
// if the DMA descriptor link is still a ring (i.e. hasn't broken down by `rmt_tx_mark_eof()`), then we treat it as a valid ping-pong event
// continue ping-pong transmission
rmt_tx_trans_desc_t *t = tx_chan->cur_trans;
size_t encoded_symbols = t->transmitted_symbol_num;
if (t->flags.encoding_done) {
rmt_tx_mark_eof(tx_chan);
encoded_symbols += 1;
} else {
encoded_symbols += rmt_encode_check_result(tx_chan, t);
}
t->transmitted_symbol_num = encoded_symbols;
tx_chan->mem_end = tx_chan->ping_pong_symbols * 3 - tx_chan->mem_end; // mem_end equals to either ping_pong_symbols or ping_pong_symbols*2
// tell DMA that we have a new descriptor attached
gdma_append(dma_chan);
return false;
}
#endif // SOC_RMT_SUPPORT_DMA