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-rw-r--r--uart_benchmark_3_megabaud/README5
1 files changed, 5 insertions, 0 deletions
diff --git a/uart_benchmark_3_megabaud/README b/uart_benchmark_3_megabaud/README
index f015872..e12667f 100644
--- a/uart_benchmark_3_megabaud/README
+++ b/uart_benchmark_3_megabaud/README
@@ -2,3 +2,8 @@
time timeout 30 picocom -b 3000000 /dev/ttyUSB1 | pv > U.txt
hexdump -C U.txt
+
+## Raspberry PI
+
+When using RPI, the default UART (ttyS0/UART0) cannot reliably receive 3 Mbaud/s.
+Instead one must switch to UART1 / ttyAMA0, by using `dtoverlay=miniuart-bt`.