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SAMD20: Beginning of SERCOM UART configuration logic

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This commit is contained in:
Gregory Nutt
2014-02-15 14:22:56 -06:00
parent 542e6e7bae
commit 69fd301151
4 changed files with 63 additions and 52 deletions
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configs/samd20-xplained/README.txt
+34 -34
View File
@@ -7,7 +7,7 @@ ATSAMD20J18A MCU.
The SAMD20 Xplained Pro Starter Kit may be bundled with three modules:
1) I/O1 - An MMC/SD card slot, PWM LED control, ADC light sensor, UART
1) I/O1 - An MMC/SD card slot, PWM LED control, ADC light sensor, USART
loopback, TWI AT30TSE758 Temperature sensor.
2) OLED1 - An OLED plus 3 additional switches and 3 additional LEDs
3) PROTO1 - A prototyping board with logic on board (other than power-related
@@ -38,7 +38,7 @@ Modules
- microSD card connector (SPI interface)
- PWM (LED control)
- ADC (light sensor)
- UART loopback
- USART loopback
- TWI AT30TSE758 Temperature sensor with EEPROM
SPI is available on two of the SAMD20 Xplained connectors, EXT1 and EXT2.
@@ -75,12 +75,12 @@ Modules
12 TWI SCL 12 PA09 SERCOM2 PAD[1] 12 PA09 SERCOM2 PAD[1] EXT2, EXT3 and EDBG
I²C SCL I²C SCL
----------------- ---------------------- ---------------------- ------------------------------------
13 UART RX 13 PB09 SERCOM4 PAD[1] 13 PB13 SERCOM4 PAD[1] The SERCOM4 module is shared between
UART RX UART RX EXT1, 2 and 3 UART's, but uses
13 USART RX 13 PB09 SERCOM4 PAD[1] 13 PB13 SERCOM4 PAD[1] The SERCOM4 module is shared between
USART RX USART RX EXT1, 2 and 3 USART's, but uses
different pins
----------------- ---------------------- ---------------------- ------------------------------------
14 UART TX 14 PB08 SERCOM4 PAD[0] 14 PB12 SERCOM4 PAD[0] The SERCOM4 module is shared between
UART TX UART TX EXT1, 2 and 3 UART's, but uses
14 USART TX 14 PB08 SERCOM4 PAD[0] 14 PB12 SERCOM4 PAD[0] The SERCOM4 module is shared between
USART TX USART TX EXT1, 2 and 3 USART's, but uses
different pins
----------------- ---------------------- ---------------------- ------------------------------------
15 microSD_SS 15 PA05 SERCOM0 PAD[1] 15 PA17 SERCOM1 PAD[1]
@@ -189,11 +189,11 @@ Modules
I²C SCL I²C SCL
----------------- ---------------------- ---------------------- ------------------------------------
13 N/C 13 PB09 SERCOM4 PAD[1] 13 PB13 SERCOM4 PAD[1] The SERCOM4 module is shared between
UART RX UART RX EXT1, 2 and 3 UART's, but uses
USART RX USART RX EXT1, 2 and 3 USART's, but uses
different pins
----------------- ---------------------- ---------------------- ------------------------------------
14 N/C 14 PB08 SERCOM4 PAD[0] 14 PB12 SERCOM4 PAD[0] The SERCOM4 module is shared between
UART TX UART TX EXT1, 2 and 3 UART's, but uses
USART TX USART TX EXT1, 2 and 3 USART's, but uses
different pins
----------------- ---------------------- ---------------------- ------------------------------------
15 DISPLAY_SS 15 PA05 SERCOM0 PAD[1] 15 PA17 SERCOM1 PAD[1]
@@ -406,8 +406,8 @@ Serial Consoles
PIN EXT1 EXT3 GPIO Function
---- ---- ------ -----------
13 PB09 PB13 SERCOM4 / UART RX
14 PB08 PB12 SERCOM4 / UART TX
13 PB09 PB13 SERCOM4 / USART RX
14 PB08 PB12 SERCOM4 / USART TX
19 19 GND
20 20 VCC
@@ -423,8 +423,8 @@ Serial Consoles
The Embedded debugger also include a Virtual Com port interface over
SERCOM3. Virtual COM port connections:
PA24 SERCOM3 / UART TXD
PA25 SERCOM3 / UART RXD
PA24 SERCOM3 / USART TXD
PA25 SERCOM3 / USART RXD
SAMD20 Xplained Pro-specific Configuration Options
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -527,25 +527,25 @@ SAMD20 Xplained Pro-specific Configuration Options
Some subsystems can be configured to operate in different ways. The drivers
need to know how to configure the subsystem.
CONFIG_SAMD_SERCOM0_ISI2C, CONFIG_SAMD_SERCOM0_ISSPI, or CONFIG_SAMD_SERCOM0_ISUART
CONFIG_SAMD_SERCOM1_ISI2C, CONFIG_SAMD_SERCOM1_ISSPI, or CONFIG_SAMD_SERCOM1_ISUART
CONFIG_SAMD_SERCOM2_ISI2C, CONFIG_SAMD_SERCOM2_ISSPI, or CONFIG_SAMD_SERCOM2_ISUART
CONFIG_SAMD_SERCOM3_ISI2C, CONFIG_SAMD_SERCOM3_ISSPI, or CONFIG_SAMD_SERCOM3_ISUART
CONFIG_SAMD_SERCOM4_ISI2C, CONFIG_SAMD_SERCOM4_ISSPI, or CONFIG_SAMD_SERCOM4_ISUART
CONFIG_SAMD_SERCOM5_ISI2C, CONFIG_SAMD_SERCOM5_ISSPI, or CONFIG_SAMD_SERCOM5_ISUART
CONFIG_SAMD_SERCOM0_ISI2C, CONFIG_SAMD_SERCOM0_ISSPI, or CONFIG_SAMD_SERCOM0_ISUSART
CONFIG_SAMD_SERCOM1_ISI2C, CONFIG_SAMD_SERCOM1_ISSPI, or CONFIG_SAMD_SERCOM1_ISUSART
CONFIG_SAMD_SERCOM2_ISI2C, CONFIG_SAMD_SERCOM2_ISSPI, or CONFIG_SAMD_SERCOM2_ISUSART
CONFIG_SAMD_SERCOM3_ISI2C, CONFIG_SAMD_SERCOM3_ISSPI, or CONFIG_SAMD_SERCOM3_ISUSART
CONFIG_SAMD_SERCOM4_ISI2C, CONFIG_SAMD_SERCOM4_ISSPI, or CONFIG_SAMD_SERCOM4_ISUSART
CONFIG_SAMD_SERCOM5_ISI2C, CONFIG_SAMD_SERCOM5_ISSPI, or CONFIG_SAMD_SERCOM5_ISUSART
SAT91SAMD20 specific device driver settings
CONFIG_UARTn_SERIAL_CONSOLE - selects the USARTn (n=0,1,2,..5) for the
console and ttys0 (default is the UART4).
CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received.
CONFIG_USARTn_SERIAL_CONSOLE - selects the USARTn (n=0,1,2,..5) for the
console and ttys0 (default is the USART4).
CONFIG_USARTn_RXBUFSIZE - Characters are buffered as received.
This specific the size of the receive buffer
CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
CONFIG_USARTn_TXBUFSIZE - Characters are buffered before
being sent. This specific the size of the transmit buffer
CONFIG_UARTn_BAUD - The configure BAUD of the UART. Must be
CONFIG_UARTn_BITS - The number of bits. Must be either 7 or 8.
CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
CONFIG_UARTn_2STOP - Two stop bits
CONFIG_USARTn_BAUD - The configure BAUD of the USART. Must be
CONFIG_USARTn_BITS - The number of bits. Must be either 7 or 8.
CONFIG_USARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
CONFIG_USARTn_2STOP - Two stop bits
Configurations
^^^^^^^^^^^^^^
@@ -601,15 +601,15 @@ Configurations
CONFIG_SAMD_SERCOM4=n
Device Drivers -> Serial Driver Support -> Serial Console
CONFIG_UART3_SERIAL_CONSOLE=y
CONFIG_USART3_SERIAL_CONSOLE=y
Device Drivers -> Serial Driver Support -> SERCOM4 Configuration
CONFIG_UART3_2STOP=0
CONFIG_UART3_BAUD=115200
CONFIG_UART3_BITS=8
CONFIG_UART3_PARITY=0
CONFIG_UART3_RXBUFSIZE=256
CONFIG_UART3_TXBUFSIZE=256
CONFIG_USART3_2STOP=0
CONFIG_USART3_BAUD=115200
CONFIG_USART3_BITS=8
CONFIG_USART3_PARITY=0
CONFIG_USART3_RXBUFSIZE=256
CONFIG_USART3_TXBUFSIZE=256
3. Unless otherwise stated, the configurations are setup for
Cygwin under Windows:
@@ -703,7 +703,7 @@ Configuration sub-directories
CONFIG_NSH_ARCHINIT=y : Board has architecture-specific initialization
NOTE: If you enable the I/O1 this configuration with SERCOM4 as the
console and with the I/O1 module in EXT1, you *must* remove UART
console and with the I/O1 module in EXT1, you *must* remove USART
jumper. Otherwise, you have lookpack on SERCOM4 and NSH will *not*
behave very well (since its outgoing prompts also appear as incoming
commands).
configs/samd20-xplained/include/board.h
+10
View File
@@ -339,6 +339,16 @@
#define BOARD_FLASH_WAITSTATES 0
/* SERCOM definitions ***************************************************************/
/* EDBG/CDC USART on SERCOM3 */
#define BOARD_SERCOM3_MUXCONFIG (USART_CTRLA_RXPAD3 | USART_CTRLA_TXPAD2)
#define BOARD_SERCOM3_PINMAP_PAD0 0
#define BOARD_SERCOM3_PINMAP_PAD1 0
#define BOARD_SERCOM3_PINMAP_PAD2 PORT_SERCOM3_PAD2_1
#define BOARD_SERCOM3_PINMAP_PAD3 PORT_SERCOM3_PAD3_1
/* LED definitions ******************************************************************/
/* There are three LEDs on board the SAMD20 Xplained Pro board: The EDBG
* controls two of the LEDs, a power LED and a status LED. There is only
configs/samd20-xplained/nsh/defconfig
+17 -16
View File
@@ -152,8 +152,8 @@ CONFIG_SAMD_HAVE_TC7=y
# CONFIG_SAMD_SERCOM0 is not set
# CONFIG_SAMD_SERCOM1 is not set
# CONFIG_SAMD_SERCOM2 is not set
# CONFIG_SAMD_SERCOM3 is not set
CONFIG_SAMD_SERCOM4=y
CONFIG_SAMD_SERCOM3=y
# CONFIG_SAMD_SERCOM4 is not set
# CONFIG_SAMD_SERCOM5 is not set
# CONFIG_SAMD_TC0 is not set
# CONFIG_SAMD_TC1 is not set
@@ -167,9 +167,9 @@ CONFIG_SAMD_SERCOM4=y
# CONFIG_SAMD_AC is not set
# CONFIG_SAMD_DAC is not set
# CONFIG_SAMD_PTC is not set
# CONFIG_SAMD_SERCOM4_ISI2C is not set
# CONFIG_SAMD_SERCOM4_ISSPI is not set
CONFIG_SAMD_SERCOM4_ISUART=y
# CONFIG_SAMD_SERCOM3_ISI2C is not set
# CONFIG_SAMD_SERCOM3_ISSPI is not set
CONFIG_SAMD_SERCOM3_ISUSART=y
#
# Architecture Options
@@ -343,27 +343,28 @@ CONFIG_DEV_NULL=y
CONFIG_SERIAL=y
# CONFIG_DEV_LOWCONSOLE is not set
# CONFIG_16550_UART is not set
CONFIG_ARCH_HAVE_UART4=y
CONFIG_ARCH_HAVE_USART3=y
#
# USART Configuration
#
CONFIG_USART3_ISUART=y
CONFIG_MCU_SERIAL=y
CONFIG_STANDARD_SERIAL=y
CONFIG_UART4_SERIAL_CONSOLE=y
CONFIG_USART3_SERIAL_CONSOLE=y
# CONFIG_NO_SERIAL_CONSOLE is not set
#
# UART4 Configuration
# USART3 Configuration
#
CONFIG_UART4_RXBUFSIZE=256
CONFIG_UART4_TXBUFSIZE=256
CONFIG_UART4_BAUD=115200
CONFIG_UART4_BITS=8
CONFIG_UART4_PARITY=0
CONFIG_UART4_2STOP=0
# CONFIG_UART4_IFLOWCONTROL is not set
# CONFIG_UART4_OFLOWCONTROL is not set
CONFIG_USART3_RXBUFSIZE=64
CONFIG_USART3_TXBUFSIZE=64
CONFIG_USART3_BAUD=9600
CONFIG_USART3_BITS=8
CONFIG_USART3_PARITY=0
CONFIG_USART3_2STOP=0
# CONFIG_USART3_IFLOWCONTROL is not set
# CONFIG_USART3_OFLOWCONTROL is not set
# CONFIG_SERIAL_IFLOWCONTROL is not set
# CONFIG_SERIAL_OFLOWCONTROL is not set
# CONFIG_USBDEV is not set
configs/samd20-xplained/src/sam_ug2832hsweg04.c
+2 -2
View File
@@ -66,10 +66,10 @@
* I²C SCL I²C SCL
* ----------------- ---------------------- ----------------------
* 13 N/C 13 PB09 SERCOM4 PAD[1] 13 PB13 SERCOM4 PAD[1]
* UART RX UART RX
* USART RX USART RX
* ----------------- ---------------------- ----------------------
* 14 N/C 14 PB08 SERCOM4 PAD[0] 14 PB12 SERCOM4 PAD[0]
* UART TX UART TX
* USART TX USART TX
* ----------------- ---------------------- ----------------------
* 15 DISPLAY_SS 15 PA05 SERCOM0 PAD[1] 15 PA17 SERCOM1 PAD[1]
* SPI SS SPI SS