xiongyu cf3b2df4a4 bugfix(uart): fix esp32 fifo_cnt bug
When using DPort to read fifo, fifo_cnt is not credible, we need to calculate the real cnt based on the fifo read and write pointer. When using AHB to read FIFO, we can use fifo_cnt to indicate the data length in fifo.
2020-06-16 14:48:02 +08:00
..
2019-11-22 15:42:16 +08:00
2019-11-22 11:44:46 +08:00
2019-12-24 11:18:31 +08:00
2019-11-19 22:19:19 +08:00
2019-11-21 10:40:49 +08:00
2019-11-21 10:40:49 +08:00
2019-06-03 14:15:08 +08:00
2019-06-03 14:15:08 +08:00
2019-11-27 20:08:44 +08:00
2019-06-22 19:08:47 +08:00
2019-11-26 20:01:50 +08:00