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https://github.com/espressif/openthread.git
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[nrf528xx] ensure HWFC is triggered when SW buffer is full (#6442)
* [nrf528xx] ensure HWFC is triggered when SW buffer is full * [nrf528xx] use UARTE peripheral for TX path Co-authored-by: Łukasz Duda <[email protected]>
This commit is contained in:
Kamil Sroka
co-authored by
Łukasz Duda
Łukasz Duda
parent
62ae1a1c36
commit
07eb021679
@@ -55,7 +55,7 @@
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*
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*/
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#ifndef UART_INSTANCE
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#define UART_INSTANCE NRF_UART0
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#define UART_INSTANCE NRF_UARTE0
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#endif
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/**
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@@ -64,12 +64,12 @@
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* UART Parity configuration.
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*
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* @brief Possible values:
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* \ref NRF_UART_PARITY_EXCLUDED - Parity bit is not present.
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* \ref NRF_UART_PARITY_INCLUDED - Parity bit is present.
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* \ref NRF_UARTE_PARITY_EXCLUDED - Parity bit is not present.
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* \ref NRF_UARTE_PARITY_INCLUDED - Parity bit is present.
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*
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*/
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#ifndef UART_PARITY
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#define UART_PARITY NRF_UART_PARITY_EXCLUDED
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#define UART_PARITY NRF_UARTE_PARITY_EXCLUDED
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#endif
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/**
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@@ -88,26 +88,26 @@
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* UART Baudrate.
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*
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* @brief Possible values:
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* \ref NRF_UART_BAUDRATE_1200 - 1200 baud.
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* \ref NRF_UART_BAUDRATE_2400 - 2400 baud.
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* \ref NRF_UART_BAUDRATE_4800 - 4800 baud.
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* \ref NRF_UART_BAUDRATE_9600 - 9600 baud.
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* \ref NRF_UART_BAUDRATE_14400 - 14400 baud.
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* \ref NRF_UART_BAUDRATE_19200 - 19200 baud.
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* \ref NRF_UART_BAUDRATE_28800 - 28800 baud.
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* \ref NRF_UART_BAUDRATE_38400 - 38400 baud.
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* \ref NRF_UART_BAUDRATE_57600 - 57600 baud.
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* \ref NRF_UART_BAUDRATE_76800 - 76800 baud.
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* \ref NRF_UART_BAUDRATE_115200 - 115200 baud.
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* \ref NRF_UART_BAUDRATE_230400 - 230400 baud.
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* \ref NRF_UART_BAUDRATE_250000 - 250000 baud.
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* \ref NRF_UART_BAUDRATE_460800 - 460800 baud.
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* \ref NRF_UART_BAUDRATE_921600 - 921600 baud.
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* \ref NRF_UART_BAUDRATE_1000000 - 1000000 baud.
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* \ref NRF_UARTE_BAUDRATE_1200 - 1200 baud.
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* \ref NRF_UARTE_BAUDRATE_2400 - 2400 baud.
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* \ref NRF_UARTE_BAUDRATE_4800 - 4800 baud.
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* \ref NRF_UARTE_BAUDRATE_9600 - 9600 baud.
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* \ref NRF_UARTE_BAUDRATE_14400 - 14400 baud.
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* \ref NRF_UARTE_BAUDRATE_19200 - 19200 baud.
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* \ref NRF_UARTE_BAUDRATE_28800 - 28800 baud.
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* \ref NRF_UARTE_BAUDRATE_38400 - 38400 baud.
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* \ref NRF_UARTE_BAUDRATE_57600 - 57600 baud.
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* \ref NRF_UARTE_BAUDRATE_76800 - 76800 baud.
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* \ref NRF_UARTE_BAUDRATE_115200 - 115200 baud.
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* \ref NRF_UARTE_BAUDRATE_230400 - 230400 baud.
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* \ref NRF_UARTE_BAUDRATE_250000 - 250000 baud.
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* \ref NRF_UARTE_BAUDRATE_460800 - 460800 baud.
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* \ref NRF_UARTE_BAUDRATE_921600 - 921600 baud.
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* \ref NRF_UARTE_BAUDRATE_1000000 - 1000000 baud.
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*
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*/
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#ifndef UART_BAUDRATE
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#define UART_BAUDRATE NRF_UART_BAUDRATE_115200
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#define UART_BAUDRATE NRF_UARTE_BAUDRATE_115200
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#endif
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/**
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@@ -50,7 +50,7 @@
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*
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*/
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#ifndef UART_INSTANCE
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#define UART_INSTANCE NRF_UART0
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#define UART_INSTANCE NRF_UARTE0
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#endif
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/**
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@@ -59,12 +59,12 @@
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* UART Parity configuration.
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*
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* @brief Possible values:
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* \ref NRF_UART_PARITY_EXCLUDED - Parity bit is not present.
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* \ref NRF_UART_PARITY_INCLUDED - Parity bit is present.
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* \ref NRF_UARTE_PARITY_EXCLUDED - Parity bit is not present.
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* \ref NRF_UARTE_PARITY_INCLUDED - Parity bit is present.
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*
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*/
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#ifndef UART_PARITY
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#define UART_PARITY NRF_UART_PARITY_EXCLUDED
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#define UART_PARITY NRF_UARTE_PARITY_EXCLUDED
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#endif
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/**
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@@ -83,26 +83,26 @@
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* UART Baudrate.
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*
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* @brief Possible values:
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* \ref NRF_UART_BAUDRATE_1200 - 1200 baud.
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* \ref NRF_UART_BAUDRATE_2400 - 2400 baud.
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* \ref NRF_UART_BAUDRATE_4800 - 4800 baud.
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* \ref NRF_UART_BAUDRATE_9600 - 9600 baud.
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* \ref NRF_UART_BAUDRATE_14400 - 14400 baud.
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* \ref NRF_UART_BAUDRATE_19200 - 19200 baud.
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* \ref NRF_UART_BAUDRATE_28800 - 28800 baud.
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* \ref NRF_UART_BAUDRATE_38400 - 38400 baud.
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* \ref NRF_UART_BAUDRATE_57600 - 57600 baud.
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* \ref NRF_UART_BAUDRATE_76800 - 76800 baud.
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* \ref NRF_UART_BAUDRATE_115200 - 115200 baud.
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* \ref NRF_UART_BAUDRATE_230400 - 230400 baud.
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* \ref NRF_UART_BAUDRATE_250000 - 250000 baud.
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* \ref NRF_UART_BAUDRATE_460800 - 460800 baud.
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* \ref NRF_UART_BAUDRATE_921600 - 921600 baud.
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* \ref NRF_UART_BAUDRATE_1000000 - 1000000 baud.
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* \ref NRF_UARTE_BAUDRATE_1200 - 1200 baud.
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* \ref NRF_UARTE_BAUDRATE_2400 - 2400 baud.
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* \ref NRF_UARTE_BAUDRATE_4800 - 4800 baud.
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* \ref NRF_UARTE_BAUDRATE_9600 - 9600 baud.
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* \ref NRF_UARTE_BAUDRATE_14400 - 14400 baud.
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* \ref NRF_UARTE_BAUDRATE_19200 - 19200 baud.
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* \ref NRF_UARTE_BAUDRATE_28800 - 28800 baud.
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* \ref NRF_UARTE_BAUDRATE_38400 - 38400 baud.
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* \ref NRF_UARTE_BAUDRATE_57600 - 57600 baud.
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* \ref NRF_UARTE_BAUDRATE_76800 - 76800 baud.
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* \ref NRF_UARTE_BAUDRATE_115200 - 115200 baud.
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* \ref NRF_UARTE_BAUDRATE_230400 - 230400 baud.
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* \ref NRF_UARTE_BAUDRATE_250000 - 250000 baud.
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* \ref NRF_UARTE_BAUDRATE_460800 - 460800 baud.
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* \ref NRF_UARTE_BAUDRATE_921600 - 921600 baud.
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* \ref NRF_UARTE_BAUDRATE_1000000 - 1000000 baud.
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*
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*/
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#ifndef UART_BAUDRATE
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#define UART_BAUDRATE NRF_UART_BAUDRATE_115200
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#define UART_BAUDRATE NRF_UARTE_BAUDRATE_115200
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#endif
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/**
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@@ -50,7 +50,7 @@
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*
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*/
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#ifndef UART_INSTANCE
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#define UART_INSTANCE NRF_UART0
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#define UART_INSTANCE NRF_UARTE0
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#endif
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/**
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@@ -59,12 +59,12 @@
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* UART Parity configuration.
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*
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* @brief Possible values:
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* \ref NRF_UART_PARITY_EXCLUDED - Parity bit is not present.
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* \ref NRF_UART_PARITY_INCLUDED - Parity bit is present.
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* \ref NRF_UARTE_PARITY_EXCLUDED - Parity bit is not present.
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* \ref NRF_UARTE_PARITY_INCLUDED - Parity bit is present.
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*
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*/
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#ifndef UART_PARITY
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#define UART_PARITY NRF_UART_PARITY_EXCLUDED
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#define UART_PARITY NRF_UARTE_PARITY_EXCLUDED
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#endif
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/**
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@@ -83,26 +83,26 @@
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* UART Baudrate.
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*
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* @brief Possible values:
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* \ref NRF_UART_BAUDRATE_1200 - 1200 baud.
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* \ref NRF_UART_BAUDRATE_2400 - 2400 baud.
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* \ref NRF_UART_BAUDRATE_4800 - 4800 baud.
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* \ref NRF_UART_BAUDRATE_9600 - 9600 baud.
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* \ref NRF_UART_BAUDRATE_14400 - 14400 baud.
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* \ref NRF_UART_BAUDRATE_19200 - 19200 baud.
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* \ref NRF_UART_BAUDRATE_28800 - 28800 baud.
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* \ref NRF_UART_BAUDRATE_38400 - 38400 baud.
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* \ref NRF_UART_BAUDRATE_57600 - 57600 baud.
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* \ref NRF_UART_BAUDRATE_76800 - 76800 baud.
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* \ref NRF_UART_BAUDRATE_115200 - 115200 baud.
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* \ref NRF_UART_BAUDRATE_230400 - 230400 baud.
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* \ref NRF_UART_BAUDRATE_250000 - 250000 baud.
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* \ref NRF_UART_BAUDRATE_460800 - 460800 baud.
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* \ref NRF_UART_BAUDRATE_921600 - 921600 baud.
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* \ref NRF_UART_BAUDRATE_1000000 - 1000000 baud.
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* \ref NRF_UARTE_BAUDRATE_1200 - 1200 baud.
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* \ref NRF_UARTE_BAUDRATE_2400 - 2400 baud.
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* \ref NRF_UARTE_BAUDRATE_4800 - 4800 baud.
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* \ref NRF_UARTE_BAUDRATE_9600 - 9600 baud.
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* \ref NRF_UARTE_BAUDRATE_14400 - 14400 baud.
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* \ref NRF_UARTE_BAUDRATE_19200 - 19200 baud.
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* \ref NRF_UARTE_BAUDRATE_28800 - 28800 baud.
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* \ref NRF_UARTE_BAUDRATE_38400 - 38400 baud.
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* \ref NRF_UARTE_BAUDRATE_57600 - 57600 baud.
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* \ref NRF_UARTE_BAUDRATE_76800 - 76800 baud.
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* \ref NRF_UARTE_BAUDRATE_115200 - 115200 baud.
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* \ref NRF_UARTE_BAUDRATE_230400 - 230400 baud.
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* \ref NRF_UARTE_BAUDRATE_250000 - 250000 baud.
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* \ref NRF_UARTE_BAUDRATE_460800 - 460800 baud.
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* \ref NRF_UARTE_BAUDRATE_921600 - 921600 baud.
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* \ref NRF_UARTE_BAUDRATE_1000000 - 1000000 baud.
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*
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*/
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#ifndef UART_BAUDRATE
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#define UART_BAUDRATE NRF_UART_BAUDRATE_115200
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#define UART_BAUDRATE NRF_UARTE_BAUDRATE_115200
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#endif
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/**
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@@ -35,6 +35,7 @@
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#include <openthread-core-config.h>
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#include <openthread/config.h>
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#include <assert.h>
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#include <stddef.h>
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#include <stdint.h>
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@@ -46,27 +47,39 @@
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#include "platform-nrf5-transport.h"
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#include <hal/nrf_gpio.h>
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#include <hal/nrf_uart.h>
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#include <hal/nrf_uarte.h>
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#include <nrf_drv_clock.h>
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#if (UART_AS_SERIAL_TRANSPORT == 1)
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/**
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* UART enable flag.
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*/
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bool sUartEnabled = false;
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/**
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* UART TX buffer variables.
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* UART TX buffer variables.
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*/
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static volatile const uint8_t *sTransmitBuffer = NULL;
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static volatile uint16_t sTransmitLength = 0;
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static volatile bool sTransmitDone = 0;
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static const uint8_t *sTransmitBuffer = NULL;
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static volatile bool sTransmitDone = 0;
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/**
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* UART RX ring buffer variables.
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* UART RX ring buffer variables.
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*/
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static uint8_t sReceiveBuffer[UART_RX_BUFFER_SIZE];
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static volatile uint16_t sReceiveHead = 0;
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static volatile uint16_t sReceiveTail = 0;
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/**
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* Function for returning the next RX buffer index.
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*
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* @return Next RX buffer index.
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*/
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static __INLINE uint16_t getNextRxBufferIndex()
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{
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return (sReceiveHead + 1) % UART_RX_BUFFER_SIZE;
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}
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/**
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* Function for checking if RX buffer is full.
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*
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@@ -75,8 +88,7 @@ static volatile uint16_t sReceiveTail = 0;
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*/
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static __INLINE bool isRxBufferFull()
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{
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uint16_t next = (sReceiveHead + 1) % UART_RX_BUFFER_SIZE;
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return (next == sReceiveTail);
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return getNextRxBufferIndex() == sReceiveTail;
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}
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/**
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@@ -119,6 +131,12 @@ static void processReceive(void)
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sReceiveTail = head;
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}
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// In case interrupts were disabled due to the full buffer, re-enable it now.
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if (!nrf_uarte_int_enable_check(UART_INSTANCE, NRF_UARTE_INT_RXDRDY_MASK))
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{
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nrf_uarte_int_enable(UART_INSTANCE, NRF_UARTE_INT_RXDRDY_MASK | NRF_UARTE_INT_ERROR_MASK);
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}
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exit:
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return;
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}
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@@ -139,7 +157,6 @@ static void processTransmit(void)
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{
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// Clear Transmition transaction and notify application.
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sTransmitBuffer = NULL;
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sTransmitLength = 0;
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sTransmitDone = false;
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otPlatUartSendDone();
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}
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@@ -182,33 +199,33 @@ otError otPlatUartEnable(void)
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nrf_gpio_pin_set(UART_PIN_TX);
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nrf_gpio_cfg_output(UART_PIN_TX);
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nrf_gpio_cfg_input(UART_PIN_RX, NRF_GPIO_PIN_NOPULL);
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nrf_uart_txrx_pins_set(UART_INSTANCE, UART_PIN_TX, UART_PIN_RX);
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nrf_uarte_txrx_pins_set(UART_INSTANCE, UART_PIN_TX, UART_PIN_RX);
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#if (UART_HWFC_ENABLED == 1)
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// Set up CTS and RTS pins.
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nrf_gpio_cfg_input(UART_PIN_CTS, NRF_GPIO_PIN_NOPULL);
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nrf_gpio_pin_set(UART_PIN_RTS);
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nrf_gpio_cfg_output(UART_PIN_RTS);
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nrf_uart_hwfc_pins_set(UART_INSTANCE, UART_PIN_RTS, UART_PIN_CTS);
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nrf_uarte_hwfc_pins_set(UART_INSTANCE, UART_PIN_RTS, UART_PIN_CTS);
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nrf_uart_configure(UART_INSTANCE, UART_PARITY, NRF_UART_HWFC_ENABLED);
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nrf_uarte_configure(UART_INSTANCE, UART_PARITY, NRF_UARTE_HWFC_ENABLED);
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#else
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nrf_uart_configure(UART_INSTANCE, UART_PARITY, NRF_UART_HWFC_DISABLED);
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nrf_uarte_configure(UART_INSTANCE, UART_PARITY, NRF_UARTE_HWFC_DISABLED);
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#endif
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// Configure baudrate.
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nrf_uart_baudrate_set(UART_INSTANCE, UART_BAUDRATE);
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nrf_uarte_baudrate_set(UART_INSTANCE, UART_BAUDRATE);
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// Clear UART specific events.
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nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_TXDRDY);
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nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_ERROR);
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nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_RXDRDY);
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nrf_uarte_event_clear(UART_INSTANCE, NRF_UARTE_EVENT_ENDTX);
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nrf_uarte_event_clear(UART_INSTANCE, NRF_UARTE_EVENT_ERROR);
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nrf_uarte_event_clear(UART_INSTANCE, NRF_UARTE_EVENT_RXDRDY);
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// Enable interrupts for TX.
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nrf_uart_int_enable(UART_INSTANCE, NRF_UART_INT_MASK_TXDRDY);
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nrf_uarte_int_enable(UART_INSTANCE, NRF_UARTE_INT_ENDTX_MASK);
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// Enable interrupts for RX.
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nrf_uart_int_enable(UART_INSTANCE, NRF_UART_INT_MASK_RXDRDY | NRF_UART_INT_MASK_ERROR);
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nrf_uarte_int_enable(UART_INSTANCE, NRF_UARTE_INT_RXDRDY_MASK | NRF_UARTE_INT_ERROR_MASK);
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// Configure NVIC to handle UART interrupts.
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NVIC_SetPriority(UART_IRQN, UART_IRQ_PRIORITY);
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@@ -223,8 +240,8 @@ otError otPlatUartEnable(void)
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}
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// Enable UART instance, and start RX on it.
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nrf_uart_enable(UART_INSTANCE);
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nrf_uart_task_trigger(UART_INSTANCE, NRF_UART_TASK_STARTRX);
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nrf_uarte_enable(UART_INSTANCE);
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nrf_uarte_task_trigger(UART_INSTANCE, NRF_UARTE_TASK_STARTRX);
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sUartEnabled = true;
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@@ -244,13 +261,13 @@ otError otPlatUartDisable(void)
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NVIC_SetPriority(UART_IRQN, 0);
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// Disable interrupts for TX.
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nrf_uart_int_disable(UART_INSTANCE, NRF_UART_INT_MASK_TXDRDY);
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nrf_uarte_int_disable(UART_INSTANCE, NRF_UARTE_INT_ENDTX_MASK);
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// Disable interrupts for RX.
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nrf_uart_int_disable(UART_INSTANCE, NRF_UART_INT_MASK_RXDRDY | NRF_UART_INT_MASK_ERROR);
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nrf_uarte_int_disable(UART_INSTANCE, NRF_UARTE_INT_RXDRDY_MASK | NRF_UARTE_INT_ERROR_MASK);
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// Disable UART instance.
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nrf_uart_disable(UART_INSTANCE);
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nrf_uarte_disable(UART_INSTANCE);
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// Release HF clock.
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nrf_drv_clock_hfclk_release();
|
||||
@@ -267,14 +284,13 @@ otError otPlatUartSend(const uint8_t *aBuf, uint16_t aBufLength)
|
||||
|
||||
otEXPECT_ACTION(sTransmitBuffer == NULL, error = OT_ERROR_BUSY);
|
||||
|
||||
// Set up transmit buffer and its size without counting first triggered byte.
|
||||
// Set up transmit buffer.
|
||||
sTransmitBuffer = aBuf;
|
||||
sTransmitLength = aBufLength - 1;
|
||||
|
||||
// Initiate Transmission process.
|
||||
nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_TXDRDY);
|
||||
nrf_uart_txd_set(UART_INSTANCE, *sTransmitBuffer++);
|
||||
nrf_uart_task_trigger(UART_INSTANCE, NRF_UART_TASK_STARTTX);
|
||||
// Initiate transmission process.
|
||||
nrf_uarte_event_clear(UART_INSTANCE, NRF_UARTE_EVENT_ENDTX);
|
||||
nrf_uarte_tx_buffer_set(UART_INSTANCE, sTransmitBuffer, aBufLength);
|
||||
nrf_uarte_task_trigger(UART_INSTANCE, NRF_UARTE_TASK_STARTTX);
|
||||
|
||||
exit:
|
||||
return error;
|
||||
@@ -286,45 +302,45 @@ exit:
|
||||
void UARTE0_UART0_IRQHandler(void)
|
||||
{
|
||||
// Check if any error has been detected.
|
||||
if (nrf_uart_event_check(UART_INSTANCE, NRF_UART_EVENT_ERROR))
|
||||
if (nrf_uarte_int_enable_check(UART_INSTANCE, NRF_UARTE_INT_ERROR_MASK) &&
|
||||
nrf_uarte_event_check(UART_INSTANCE, NRF_UARTE_EVENT_ERROR))
|
||||
{
|
||||
nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_ERROR);
|
||||
nrf_uarte_event_clear(UART_INSTANCE, NRF_UARTE_EVENT_ERROR);
|
||||
}
|
||||
else if (nrf_uart_event_check(UART_INSTANCE, NRF_UART_EVENT_RXDRDY))
|
||||
else if (nrf_uarte_int_enable_check(UART_INSTANCE, NRF_UARTE_INT_RXDRDY_MASK) &&
|
||||
nrf_uarte_event_check(UART_INSTANCE, NRF_UARTE_EVENT_RXDRDY))
|
||||
{
|
||||
// Clear RXDRDY event.
|
||||
nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_RXDRDY);
|
||||
nrf_uarte_event_clear(UART_INSTANCE, NRF_UARTE_EVENT_RXDRDY);
|
||||
|
||||
// Read byte from the UART buffer.
|
||||
uint8_t byte = nrf_uart_rxd_get(UART_INSTANCE);
|
||||
uint8_t byte = nrf_uart_rxd_get((NRF_UART_Type *)UART_INSTANCE);
|
||||
|
||||
if (!isRxBufferFull())
|
||||
assert(!isRxBufferFull());
|
||||
|
||||
sReceiveBuffer[sReceiveHead] = byte;
|
||||
sReceiveHead = getNextRxBufferIndex();
|
||||
|
||||
// Check if we are able to process next RX bytes.
|
||||
if (isRxBufferFull())
|
||||
{
|
||||
sReceiveBuffer[sReceiveHead] = byte;
|
||||
sReceiveHead = (sReceiveHead + 1) % UART_RX_BUFFER_SIZE;
|
||||
|
||||
otSysEventSignalPending();
|
||||
// Disable interrupts for RX.
|
||||
nrf_uarte_int_disable(UART_INSTANCE, NRF_UARTE_INT_RXDRDY_MASK | NRF_UARTE_INT_ERROR_MASK);
|
||||
}
|
||||
|
||||
otSysEventSignalPending();
|
||||
}
|
||||
|
||||
if (nrf_uart_event_check(UART_INSTANCE, NRF_UART_EVENT_TXDRDY))
|
||||
if (nrf_uarte_event_check(UART_INSTANCE, NRF_UARTE_EVENT_ENDTX))
|
||||
{
|
||||
// Clear TXDRDY event.
|
||||
nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_TXDRDY);
|
||||
// Clear ENDTX event.
|
||||
nrf_uarte_event_clear(UART_INSTANCE, NRF_UARTE_EVENT_ENDTX);
|
||||
|
||||
// Send any more bytes if available or call application about TX done.
|
||||
if (sTransmitLength)
|
||||
{
|
||||
nrf_uart_txd_set(UART_INSTANCE, *sTransmitBuffer++);
|
||||
sTransmitLength--;
|
||||
}
|
||||
else
|
||||
{
|
||||
sTransmitDone = true;
|
||||
nrf_uart_task_trigger(UART_INSTANCE, NRF_UART_TASK_STOPTX);
|
||||
sTransmitDone = true;
|
||||
|
||||
otSysEventSignalPending();
|
||||
}
|
||||
nrf_uarte_task_trigger(UART_INSTANCE, NRF_UARTE_TASK_STOPTX);
|
||||
|
||||
otSysEventSignalPending();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user