EFM32: Add basic, low-level support for the low energy UARTs
This commit is contained in:
Gregory Nutt
parent
994dbda075
commit
58f6b696f6
@ -88,35 +88,41 @@ config EFM32_HAVE_LEUART1
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default n
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# When there are multiple instances of a device, these "hidden" settings
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#will automatically be selected and will represent the 'OR' of the
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# will automatically be selected and will represent the 'OR' of the
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# instances selected.
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# selection MCU
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config EFM32_USART
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bool
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default n
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config EFM32_UART
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bool
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default n
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config EFM32_LEUART
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bool
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default n
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# Then, these are the actual, selectable peripheral options
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config EFM32_USART0
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bool "USART0"
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default n
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select ARCH_HAVE_USART0
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select EFM32_UART
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select EFM32_USART
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config EFM32_USART1
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bool "USART1"
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default n
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select ARCH_HAVE_USART1
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select EFM32_UART
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select EFM32_USART
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config EFM32_USART2
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bool "USART2"
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default n
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depends on EFM32_HAVE_USART2
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select ARCH_HAVE_USART2
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select EFM32_UART
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select EFM32_USART
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config EFM32_UART0
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bool "UART0"
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@ -133,13 +139,13 @@ config EFM32_UART1
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config EFM32_LEUART0
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bool "Low energy UART0"
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default n
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select EFM32_UART
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select EFM32_LEUART
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config EFM32_LEUART1
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bool "Low energy UART1"
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default n
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select EFM32_HAVE_LEUART1
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select EFM32_UART
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select EFM32_LEUART
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endmenu # EFM32 Peripheral Support
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@ -66,17 +66,23 @@
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# undef CONFIG_EFM32_LEUART1
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#endif
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#ifndef CONFIG_EFM32_UART
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#ifndef CONFIG_EFM32_USART
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# undef CONFIG_EFM32_USART0
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# undef CONFIG_EFM32_USART1
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# undef CONFIG_EFM32_USART2
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#endif
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#ifndef CONFIG_EFM32_UART
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# undef CONFIG_EFM32_UART0
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# undef CONFIG_EFM32_UART1
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#endif
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#ifndef CONFIG_EFM32_LEUART
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# undef CONFIG_EFM32_LEUART0
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# undef CONFIG_EFM32_LEUART1
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#endif
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/* Is there a UART device? (excluding low energy UARTs) */
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/* Is there a UART device? */
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#undef HAVE_UART_DEVICE
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#if defined(CONFIG_EFM32_USART0) || defined(CONFIG_EFM32_USART1) || \
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@ -85,38 +91,74 @@
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# define HAVE_UART_DEVICE 1
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#endif
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/* Is there an LEUART device? */
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#undef HAVE_LEUART_DEVICE
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#if defined(CONFIG_EFM32_LEUART0) || defined(CONFIG_EFM32_LEUART1)
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# define HAVE_LEUART_DEVICE 1
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#endif
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/* Is there a serial console? (Low energy UARTs not yet supported) */
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#undef HAVE_UART_CONSOLE
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#undef HAVE_LEUART_CONSOLE
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#if defined(CONFIG_USART0_SERIAL_CONSOLE) && defined(CONFIG_EFM32_USART0)
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# define HAVE_SERIAL_CONSOLE 1
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# undef CONFIG_LEUART0_SERIAL_CONSOLE
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# undef CONFIG_LEUART1_SERIAL_CONSOLE
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# define HAVE_UART_CONSOLE 1
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#elif defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_EFM32_USART1)
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# define HAVE_SERIAL_CONSOLE 1
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# undef CONFIG_LEUART0_SERIAL_CONSOLE
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# undef CONFIG_LEUART1_SERIAL_CONSOLE
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# define HAVE_UART_CONSOLE 1
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#elif defined(CONFIG_USART2_SERIAL_CONSOLE) && defined(CONFIG_EFM32_USART2)
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# define HAVE_SERIAL_CONSOLE 1
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# undef CONFIG_LEUART0_SERIAL_CONSOLE
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# undef CONFIG_LEUART1_SERIAL_CONSOLE
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# define HAVE_UART_CONSOLE 1
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#elif defined(CONFIG_UART0_SERIAL_CONSOLE) && defined(CONFIG_EFM32_UART0)
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# define HAVE_SERIAL_CONSOLE 1
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# undef CONFIG_LEUART0_SERIAL_CONSOLE
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# undef CONFIG_LEUART1_SERIAL_CONSOLE
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# define HAVE_UART_CONSOLE 1
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#elif defined(CONFIG_UART1_SERIAL_CONSOLE) && defined(CONFIG_EFM32_UART1)
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# define HAVE_SERIAL_CONSOLE 1
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# undef CONFIG_LEUART0_SERIAL_CONSOLE
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# undef CONFIG_LEUART1_SERIAL_CONSOLE
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# define HAVE_UART_CONSOLE 1
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#elif defined(CONFIG_LEUART0_SERIAL_CONSOLE) && defined(CONFIG_EFM32_LEUART0)
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# undef CONFIG_LEUART1_SERIAL_CONSOLE
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# define HAVE_LEUART_CONSOLE 1
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#elif defined(CONFIG_LEUART1_SERIAL_CONSOLE) && defined(CONFIG_EFM32_LEUART1)
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# undef CONFIG_LEUART0_SERIAL_CONSOLE
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# define HAVE_LEUART_CONSOLE 1
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#else
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# warning "No valid CONFIG_U[S]ART[n]_SERIAL_CONSOLE Setting"
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# undef CONFIG_USART0_SERIAL_CONSOLE
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@ -124,7 +166,8 @@
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# undef HAVE_SERIAL_CONSOLE
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# undef CONFIG_LEUART0_SERIAL_CONSOLE
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# undef CONFIG_LEUART1_SERIAL_CONSOLE
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#endif
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/************************************************************************************
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@ -49,6 +49,7 @@
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#include "chip/efm32_memorymap.h"
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#include "chip/efm32_usart.h"
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#include "chip/efm32_leuart.h"
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#include "chip/efm32_cmu.h"
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#include "efm32_lowputc.h"
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@ -58,7 +59,7 @@
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/* Console U[S]ART base address */
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#ifdef HAVE_SERIAL_CONSOLE
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#if defined(HAVE_UART_CONSOLE)
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# if defined(CONFIG_USART0_SERIAL_CONSOLE)
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# define CONSOLE_BASE EFM32_USART0_BASE
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# define CONSOLE_BAUD CONFIG_USART0_BAUD
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@ -90,16 +91,32 @@
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# define CONSOLE_NBITS CONFIG_UART1_BITS
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# define CONSOLE_2STOP CONFIG_UART1_2STOP
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# else
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# error No console is selected???? Internal craziness!!!
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# error No U[S]ART console is selected???? Internal craziness!!!
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# endif
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#endif /* HAVE_SERIAL_CONSOLE */
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#elif defined(HAVE_LEUART_CONSOLE)
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# if defined(CONFIG_LEUART0_SERIAL_CONSOLE)
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# define CONSOLE_BASE EFM32_LEUART0_BASE
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# define CONSOLE_BAUD CONFIG_LEUART0_BAUD
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# define CONSOLE_PARITY CONFIG_LEUART0_PARITY
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# define CONSOLE_NBITS CONFIG_LEUART0_BITS
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# define CONSOLE_2STOP CONFIG_LEUART0_2STOP
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# elif defined(CONFIG_LEUART1_SERIAL_CONSOLE)
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# define CONSOLE_BASE EFM32_LEUART1_BASE
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# define CONSOLE_BAUD CONFIG_LEUART1_BAUD
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# define CONSOLE_PARITY CONFIG_LEUART1_PARITY
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# define CONSOLE_NBITS CONFIG_LEUART1_BITS
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# define CONSOLE_2STOP CONFIG_LEUART1_2STOP
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# else
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# error No U[S]ART console is selected???? Internal craziness!!!
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# endif
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#endif /* HAVE_UART_CONSOLE */
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: efm32_setbaud
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* Name: efm32_uart_setbaud
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*
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* Description:
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* Set optimal oversampling and set the baud for this U[S]ART.
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@ -107,7 +124,7 @@
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****************************************************************************/
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#ifdef HAVE_UART_DEVICE
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static void efm32_setbaud(uintptr_t base, uint32_t baud)
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static void efm32_uart_setbaud(uintptr_t base, uint32_t baud)
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{
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uint64_t clkdiv;
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uint64_t maxover;
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@ -189,18 +206,60 @@ static void efm32_setbaud(uintptr_t base, uint32_t baud)
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DEBUGASSERT(clkdiv <= _USART_CLKDIV_MASK);
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/* Set up the select oversampling and baud */
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/* Set up the selected oversampling and baud */
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regval = getreg32(base + EFM32_USART_CTRL_OFFSET);
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regval &= ~_USART_CTRL_OVS_MASK;
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regval |= ovs;
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putreg32(regval, base + EFM32_USART_CTRL_OFFSET);
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putreg32((uint32_t)clkdiv & _USART_CTRL_OVS_MASK,
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putreg32((uint32_t)clkdiv & _USART_CLKDIV_DIV_MASK,
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base + EFM32_USART_CLKDIV_OFFSET);
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}
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#endif
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/****************************************************************************
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* Name: efm32_leuart_setbaud
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*
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* Description:
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* Set optimal oversampling and set the baud for this U[S]ART.
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*
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****************************************************************************/
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#ifdef HAVE_LEUART_DEVICE
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static void efm32_leuart_setbaud(uintptr_t base, uint32_t baud)
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{
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uint32_t clkdiv;
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/* Baud is configured by:
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*
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* baud = fLEUART / (1 + CLKDIV / 256)
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*
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* Or
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*
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* CLKDIV = 256 * (fLEUART / baud - 1)
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* CLKDIV = (256 * fLEUART) / baud - 256
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*/
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clkdiv = (BOARD_LFBCLK_FREQUENCY << 8) / baud;
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if (clkdiv > 256)
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{
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clkdiv -= 256;
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}
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else
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{
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clkdiv = 0;
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}
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DEBUGASSERT(clkdiv <= _LEUART_CLKDIV_MASK);
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/* Set up the selected baud */
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putreg32((uint32_t)clkdiv & _LEUART_CLKDIV_DIV_MASK,
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base + EFM32_LEUART_CLKDIV_OFFSET);
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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@ -218,10 +277,12 @@ static void efm32_setbaud(uintptr_t base, uint32_t baud)
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void efm32_lowsetup(void)
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{
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#ifdef HAVE_UART_DEVICE
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#if defined(HAVE_UART_DEVICE) || defined(HAVE_UART_DEVICE)
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uint32_t regval;
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#endif
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/* Enable clocking to configured UART/USART devices */
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#ifdef HAVE_UART_DEVICE
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/* Enable clocking to configured UART/USART interfaces */
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regval = getreg32(EFM32_CMU_HFPERCLKEN0);
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regval &= ~(CMU_HFPERCLKEN0_USART0
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@ -258,9 +319,32 @@ void efm32_lowsetup(void)
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#endif
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putreg32(regval, EFM32_CMU_HFPERCLKEN0);
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#endif /* HAVE_UART_DEVICE */
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#ifdef HAVE_LEUART_DEVICE
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/* Enable clocking to configured LEUART interfaces */
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regval = getreg32(EFM32_CMU_LFBCLKEN0);
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regval &= ~(CMU_LFBCLKEN0_LEUART0
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#ifdef CONFIG_EFM32_LEUART1
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| CMU_HFPERCLKEN0_UART1
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#endif
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);
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#ifdef CONFIG_EFM32_LEUART0
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regval |= CMU_LFBCLKEN0_LEUART0;
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#endif
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#ifdef CONFIG_EFM32_LEUART1
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regval |= CMU_LFBCLKEN0_LEUART1;
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#endif
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putreg32(regval, EFM32_CMU_LFBCLKEN0);
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#endif /* HAVE_LEUART_DEVICE */
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/* Set location in the ROUTE register */
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#ifdef HAVE_UART_DEVICE
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#ifdef CONFIG_EFM32_USART0
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regval = (USART_ROUTE_RXPEN | USART_ROUTE_TXPEN |
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(BOARD_USART0_ROUTE_LOCATION << _USART_ROUTE_LOCATION_SHIFT));
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@ -290,23 +374,34 @@ void efm32_lowsetup(void)
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(BOARD_UART1_ROUTE_LOCATION << _USART_ROUTE_LOCATION_SHIFT));
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putreg32(regval, EFM32_UART1_ROUTE);
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#endif
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#endif /* HAVE_UART_DEVICE */
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#ifdef CONFIG_EFM32_LEUART0
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# warning Missing LEUART0 support
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#ifdef HAVE_LEUART_DEVICE
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#ifdef CONFIG_EFM32_UART0
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regval = (LEUART_ROUTE_RXPEN | LEUART_ROUTE_TXPEN |
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(BOARD_LEUART0_ROUTE_LOCATION << _LEUART_ROUTE_LOCATION_SHIFT));
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putreg32(regval, EFM32_LEUART0_ROUTE);
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#endif
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#ifdef CONFIG_EFM32_LEUART1
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# warning Missing LEUART1 support
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#ifdef CONFIG_EFM32_UART1
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regval = (LEUART_ROUTE_RXPEN | LEUART_ROUTE_TXPEN |
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(BOARD_LEUART1_ROUTE_LOCATION << _LEUART_ROUTE_LOCATION_SHIFT));
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putreg32(regval, EFM32_LEUART1_ROUTE);
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#endif
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#endif /* HAVE_LEUART_DEVICE */
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#ifdef HAVE_SERIAL_CONSOLE
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/* Configure the serial console */
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#if defined(HAVE_UART_CONSOLE)
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/* Configure the U[S]ART serial console */
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efm32_uartconfigure(CONSOLE_BASE, CONSOLE_BAUD, CONSOLE_PARITY,
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CONSOLE_NBITS, CONSOLE_2STOP);
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#elif defined(HAVE_LEUART_CONSOLE)
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/* Configure the LEUART serial console */
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efm32_leuartconfigure(CONSOLE_BASE, CONSOLE_BAUD, CONSOLE_PARITY,
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CONSOLE_NBITS, CONSOLE_2STOP);
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#endif
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}
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@ -318,7 +413,7 @@ void efm32_lowsetup(void)
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*
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*****************************************************************************/
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#ifdef HAVE_SERIAL_CONSOLE
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#if defined(HAVE_UART_CONSOLE)
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void efm32_lowputc(uint32_t ch)
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{
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/* The TX Buffer Level (TXBL) status bit indicates the level of the
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@ -332,13 +427,28 @@ void efm32_lowputc(uint32_t ch)
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putreg32((uint32_t)ch, CONSOLE_BASE + EFM32_USART_TXDATA_OFFSET);
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}
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#elif defined(HAVE_LEUART_CONSOLE)
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void efm32_lowputc(uint32_t ch)
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{
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/* The TX Buffer Level (TXBL) status bit indicates the level of the
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* transmit buffer. If TXBIL is set, TXBL is set whenever the transmit
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* buffer is half-full or empty.
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*/
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while ((getreg32(CONSOLE_BASE + EFM32_LEUART_STATUS_OFFSET) & LEUART_STATUS_TXBL) == 0);
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/* Then send the character */
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putreg32((uint32_t)ch, CONSOLE_BASE + EFM32_LEUART_TXDATA_OFFSET);
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}
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#endif
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/*****************************************************************************
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* Name: efm32_uartconfigure
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*
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* Description:
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* Configure a UART as a RS-232 UART.
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* Configure a U[S]ART as a RS-232 UART.
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*
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*****************************************************************************/
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@ -352,7 +462,7 @@ void efm32_uartconfigure(uintptr_t base, uint32_t baud, unsigned int parity,
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* ROUTE information which must be preserved).
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*/
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efm32_uartreset(base);
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efm32_uart_reset(base);
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/* Configure number of data bits */
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@ -446,7 +556,7 @@ void efm32_uartconfigure(uintptr_t base, uint32_t baud, unsigned int parity,
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/* Set the baud clock divisor */
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efm32_setbaud(base, baud);
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efm32_uart_setbaud(base, baud);
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/* Enable the U[S]ART */
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@ -455,7 +565,83 @@ void efm32_uartconfigure(uintptr_t base, uint32_t baud, unsigned int parity,
|
||||
#endif
|
||||
|
||||
/*****************************************************************************
|
||||
* Name: efm32_uartreset
|
||||
* Name: efm32_leuartconfigure
|
||||
*
|
||||
* Description:
|
||||
* Configure a LEUART as a RS-232 UART.
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
#ifdef HAVE_LEUART_DEVICE
|
||||
void efm32_leuartconfigure(uintptr_t base, uint32_t baud, unsigned int parity,
|
||||
unsigned int nbits, bool stop2)
|
||||
{
|
||||
uint32_t regval = 0;
|
||||
|
||||
/* Make sure that the U[S]ART registers are in the reset state (except for
|
||||
* ROUTE information which must be preserved).
|
||||
*/
|
||||
|
||||
efm32_uart_reset(base);
|
||||
|
||||
/* Configure number of data bits */
|
||||
|
||||
switch (nbits)
|
||||
{
|
||||
default:
|
||||
case 8:
|
||||
regval |= LEUART_CTRL_DATABITS_EIGHT;
|
||||
break;
|
||||
|
||||
case 9:
|
||||
regval |= LEUART_CTRL_DATABITS_NINE;
|
||||
break;
|
||||
}
|
||||
|
||||
/* Configure parity */
|
||||
|
||||
switch (parity)
|
||||
{
|
||||
default:
|
||||
case 0:
|
||||
regval |= LEUART_CTRL_PARITY_NONE;
|
||||
break;
|
||||
|
||||
case 1:
|
||||
regval |= LEUART_CTRL_PARITY_ODD;
|
||||
break;
|
||||
|
||||
case 2:
|
||||
regval |= LEUART_CTRL_PARITY_EVEN;
|
||||
break;
|
||||
|
||||
}
|
||||
|
||||
/* Configure stop bits */
|
||||
|
||||
if (stop2)
|
||||
{
|
||||
regval |= _LEUART_CTRL_STOPBITS_TWO;
|
||||
}
|
||||
else
|
||||
{
|
||||
regval |= _LEUART_CTRL_STOPBITS_ONE;
|
||||
}
|
||||
|
||||
putreg32(regval, base + EFM32_LEUART_CTRL_OFFSET);
|
||||
|
||||
/* Set the baud clock divisor */
|
||||
|
||||
efm32_leuart_setbaud(base, baud);
|
||||
|
||||
/* Enable the U[S]ART */
|
||||
|
||||
putreg32(LEUART_CMD_RXEN | LEUART_CMD_TXEN, base + EFM32_LEUART_CMD_OFFSET);
|
||||
}
|
||||
#endif
|
||||
|
||||
/*****************************************************************************
|
||||
* Name: efm32_uart_reset
|
||||
*
|
||||
* Description:
|
||||
* Reset the USART/UART by disabling it and restoring all of the registers
|
||||
@ -465,7 +651,7 @@ void efm32_uartconfigure(uintptr_t base, uint32_t baud, unsigned int parity,
|
||||
*****************************************************************************/
|
||||
|
||||
#ifdef HAVE_UART_DEVICE
|
||||
void efm32_uartreset(uintptr_t base)
|
||||
void efm32_uart_reset(uintptr_t base)
|
||||
{
|
||||
putreg32(USART_CMD_RXDIS | USART_CMD_TXDIS | USART_CMD_MASTERDIS |
|
||||
USART_CMD_RXBLOCKDIS | USART_CMD_TXTRIDIS | USART_CMD_CLEARTX |
|
||||
@ -486,3 +672,32 @@ void efm32_uartreset(uintptr_t base)
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
/*****************************************************************************
|
||||
* Name: efm32_leuart_reset
|
||||
*
|
||||
* Description:
|
||||
* Reset the USART/UART by disabling it and restoring all of the registers
|
||||
* to the initial, reset value. Only the ROUTE data set by efm32_lowsetup
|
||||
* is preserved.
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
#ifdef HAVE_LEUART_DEVICE
|
||||
void efm32_leuart_reset(uintptr_t base)
|
||||
{
|
||||
putreg32(LEUART_CMD_RXDIS | LEUART_CMD_TXDIS | LEUART_CMD_RXBLOCKDIS |
|
||||
LEUART_CMD_CLEARTX | LEUART_CMD_CLEARRX,
|
||||
base + EFM32_LEUART_CMD_OFFSET);
|
||||
putreg32(_LEUART_CTRL_RESETVALUE, base + EFM32_LEUART_CTRL_OFFSET);
|
||||
putreg32(_LEUART_CLKDIV_RESETVALUE, base + EFM32_LEUART_CLKDIV_OFFSET);
|
||||
putreg32(_LEUART_STARTFRAME_RESETVALUE, base + EFM32_LEUART_STARTFRAME_OFFSET);
|
||||
putreg32(_LEUART_SIGFRAME_RESETVALUE, base + EFM32_LEUART_SIGFRAME_OFFSET);
|
||||
putreg32(_LEUART_IEN_RESETVALUE, base + EFM32_LEUART_IEN_OFFSET);
|
||||
putreg32(_LEUART_IFC_MASK, base + EFM32_LEUART_IFC_OFFSET);
|
||||
putreg32(_LEUART_PULSECTRL_RESETVALUE, base + EFM32_LEUART_PULSECTRL_OFFSET);
|
||||
#if defined(EFM32_LEUART_INPUT_OFFSET)
|
||||
putreg32(_LEUART_INPUT_RESETVALUE, base + EFM32_LEUART_INPUT_OFFSET);
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -71,7 +71,7 @@ void efm32_lowsetup(void);
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
#ifdef HAVE_SERIAL_CONSOLE
|
||||
#ifdef HAVE_UART_CONSOLE
|
||||
void efm32_lowputc(uint32_t ch);
|
||||
#endif
|
||||
|
||||
@ -79,7 +79,7 @@ void efm32_lowputc(uint32_t ch);
|
||||
* Name: efm32_uartconfigure
|
||||
*
|
||||
* Description:
|
||||
* Configure a UART as a RS-232 UART.
|
||||
* Configure a U[S]ART as a RS-232 UART.
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
@ -89,7 +89,20 @@ void efm32_uartconfigure(uintptr_t base, uint32_t baud, unsigned int parity,
|
||||
#endif
|
||||
|
||||
/*****************************************************************************
|
||||
* Name: efm32_uartreset
|
||||
* Name: efm32_leuartconfigure
|
||||
*
|
||||
* Description:
|
||||
* Configure a LEUART as a RS-232 UART.
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
#ifdef HAVE_LEUART_DEVICE
|
||||
void efm32_leuartconfigure(uintptr_t base, uint32_t baud, unsigned int parity,
|
||||
unsigned int nbits, bool stop2)
|
||||
#endif
|
||||
|
||||
/*****************************************************************************
|
||||
* Name: efm32_uart_reset
|
||||
*
|
||||
* Description:
|
||||
* Reset the USART/UART by disabling it and restoring all of the registers
|
||||
@ -99,7 +112,7 @@ void efm32_uartconfigure(uintptr_t base, uint32_t baud, unsigned int parity,
|
||||
*****************************************************************************/
|
||||
|
||||
#ifdef HAVE_UART_DEVICE
|
||||
void efm32_uartreset(uintptr_t base);
|
||||
void efm32_uart_reset(uintptr_t base);
|
||||
#endif
|
||||
|
||||
#endif /* __ARCH_ARM_SRC_EFM32_EFM32_LOWPUTC_H */
|
||||
|
||||
@ -648,7 +648,7 @@ static void efm32_shutdown(struct uart_dev_s *dev)
|
||||
* is preserved.
|
||||
*/
|
||||
|
||||
efm32_uartreset(priv->config->uartbase);
|
||||
efm32_uart_reset(priv->config->uartbase);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
@ -1203,7 +1203,7 @@ void up_serialinit(void)
|
||||
|
||||
int up_putc(int ch)
|
||||
{
|
||||
#ifdef HAVE_SERIAL_CONSOLE
|
||||
#ifdef HAVE_UART_CONSOLE
|
||||
struct efm32_usart_s *priv = (struct efm32_usart_s*)CONSOLE_DEV.priv;
|
||||
uint32_t ien;
|
||||
|
||||
@ -1236,7 +1236,7 @@ int up_putc(int ch)
|
||||
|
||||
int up_putc(int ch)
|
||||
{
|
||||
#ifdef HAVE_SERIAL_CONSOLE
|
||||
#ifdef HAVE_UART_CONSOLE
|
||||
/* Check for LF */
|
||||
|
||||
if (ch == '\n')
|
||||
|
||||
Loading…
Reference in New Issue
Block a user