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SAMD20: SPI driver is code-complete, but untested

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This commit is contained in:
Gregory Nutt 2014-02-20 09:59:54 -06:00
parent 759724e815
commit 51b484adb8
1 changed files with 78 additions and 21 deletions
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99
configs/samd20-xplained/include/board.h
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@ -355,7 +355,65 @@
#endif
/* SERCOM definitions ***************************************************************/
/* SERCOM4 is available on connectors EXT1, EXT2, and EXT3
/* This is the source clock generator for the GCLK_SERCOM_SLOW clock that is common
* to all SERCOM modules.
*/
#define BOARD_SERCOM_SLOW_GCLKGEN (GCLK_CLKCTRL_GEN0 >> GCLK_CLKCTRL_GEN_SHIFT)
/* SERCOM0 SPI is available on EXT1
*
* PIN PORT SERCOM FUNCTION
* --- ------------------ -----------
* 15 PA5 SERCOM0 PAD1 SPI SS
* 16 PA6 SERCOM0 PAD2 SPI MOSI
* 17 PA4 SERCOM0 PAD0 SPI MISO
* 18 PA7 SERCOM0 PAD3 SPI SCK
*/
#define BOARD_SERCOM0_CLKGEN GCLK_CLKCTRL_GEN0
#define BOARD_SERCOM0_MUX_SETTING (SPI_CTRLA_DOPO_DOPAD231 | SPI_CTRLA_DIPAD0)
#define BOARD_SERCOM0_PINMUX_PAD0 PINMUX_PA04D_SERCOM0_PAD0 /* SPI_MISO */
#define BOARD_SERCOM0_PINMUX_PAD1 0 /* microSD_SS */
#define BOARD_SERCOM0_PINMUX_PAD2 PINMUX_PA06D_SERCOM0_PAD2 /* SPI_MOSI */
#define BOARD_SERCOM0_PINMUX_PAD3 PINMUX_PA07D_SERCOM0_PAD3 /* SPI_SCK */
/* SERCOM1 SPI is available on EXT2
*
* PIN PORT SERCOM FUNCTION
* --- ------------------ -----------
* 15 PA17 SERCOM1 PAD1 SPI SS
* 16 PA18 SERCOM1 PAD2 SPI MOSI
* 17 PA16 SERCOM1 PAD0 SPI MISO
* 18 PA19 SERCOM1 PAD3 SPI SCK
*/
#define BOARD_SERCOM1_CLKGEN GCLK_CLKCTRL_GEN0
#define BOARD_SERCOM1_MUX_SETTING (SPI_CTRLA_DOPO_DOPAD231 | SPI_CTRLA_DIPAD0)
#define BOARD_SERCOM1_PINMUX_PAD0 PINMUX_PA16C_SERCOM1_PAD0 /* SPI_MISO */
#define BOARD_SERCOM1_PINMUX_PAD1 0 /* microSD_SS */
#define BOARD_SERCOM1_PINMUX_PAD2 PINMUX_PA18C_SERCOM1_PAD2 /* SPI_MOSI */
#define BOARD_SERCOM1_PINMUX_PAD3 PINMUX_PA19C_SERCOM1_PAD3 /* SPI_SCK */
/* The SAMD20 Xplained Pro contains an Embedded Debugger (EDBG) that can be
* used to program and debug the ATSAMD20J18A using Serial Wire Debug (SWD).
* The Embedded debugger also include a Virtual COM port interface over
* SERCOM3. Virtual COM port connections:
*
* PA24 SERCOM3 / USART TXD
* PA25 SERCOM3 / USART RXD
*/
#define BOARD_SERCOM3_GCLKGEN GCLK_CLKCTRL_GEN0
#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 /* USART TX */
#define BOARD_SERCOM3_PINMAP_PAD3 PORT_SERCOM3_PAD3_1 /* USART RX */
#define BOARD_SERCOM3_FREQUENCY BOARD_GCLK0_FREQUENCY
/* The SERCOM4 USART is available on connectors EXT1, EXT2, and EXT3
*
* PIN EXT1 EXT2 EXT3 GPIO Function
* ---- ---- ---- ---- ------------------
@ -374,43 +432,42 @@
#if defined(CONFIG_SAMD20_XPLAINED_USART4_EXT1)
# define BOARD_SERCOM4_MUXCONFIG (USART_CTRLA_RXPAD1 | USART_CTRLA_TXPAD0)
# define BOARD_SERCOM4_PINMAP_PAD0 PORT_SERCOM4_PAD0_3
# define BOARD_SERCOM4_PINMAP_PAD1 PORT_SERCOM4_PAD1_3
# define BOARD_SERCOM4_PINMAP_PAD0 PORT_SERCOM4_PAD0_3 /* USART TX */
# define BOARD_SERCOM4_PINMAP_PAD1 PORT_SERCOM4_PAD1_3 /* USART RX */
# define BOARD_SERCOM4_PINMAP_PAD2 0
# define BOARD_SERCOM4_PINMAP_PAD3 0
#elif defined(CONFIG_SAMD20_XPLAINED_USART4_EXT2)
# define BOARD_SERCOM4_MUXCONFIG (USART_CTRLA_RXPAD1 | USART_CTRLA_TXPAD0)
# define BOARD_SERCOM4_PINMAP_PAD0 PORT_SERCOM4_PAD0_1
# define BOARD_SERCOM4_PINMAP_PAD1 PORT_SERCOM4_PAD1_1
# define BOARD_SERCOM4_PINMAP_PAD0 PORT_SERCOM4_PAD0_1 /* USART TX */
# define BOARD_SERCOM4_PINMAP_PAD1 PORT_SERCOM4_PAD1_1 /* USART RX */
# define BOARD_SERCOM4_PINMAP_PAD2 0
# define BOARD_SERCOM4_PINMAP_PAD3 0
#else /* if defined(CONFIG_SAMD20_XPLAINED_USART4_EXT3) */
# define BOARD_SERCOM4_MUXCONFIG (USART_CTRLA_RXPAD3 | USART_CTRLA_TXPAD2)
# define BOARD_SERCOM4_PINMAP_PAD0 0
# define BOARD_SERCOM4_PINMAP_PAD1 0
# define BOARD_SERCOM4_PINMAP_PAD2 PORT_SERCOM4_PAD2_3
# define BOARD_SERCOM4_PINMAP_PAD3 PORT_SERCOM4_PAD3_3
# define BOARD_SERCOM4_PINMAP_PAD2 PORT_SERCOM4_PAD2_3 /* USART TX */
# define BOARD_SERCOM4_PINMAP_PAD3 PORT_SERCOM4_PAD3_3 /* USART RX */
#endif
#define BOARD_SERCOM4_FREQUENCY BOARD_GCLK0_FREQUENCY
/* The SAMD20 Xplained Pro contains an Embedded Debugger (EDBG) that can be
* used to program and debug the ATSAMD20J18A using Serial Wire Debug (SWD).
* The Embedded debugger also include a Virtual COM port interface over
* SERCOM3. Virtual COM port connections:
/* SERCOM5 SPI is available on EXT3
*
* PA24 SERCOM3 / USART TXD
* PA25 SERCOM3 / USART RXD
* PIN PORT SERCOM FUNCTION
* --- ------------------ -----------
* 15 PB17 SERCOM5 PAD1 SPI SS
* 16 PB22 SERCOM5 PAD2 SPI MOSI
* 17 PB16 SERCOM5 PAD0 SPI MISO
* 18 PB23 SERCOM5 PAD3 SPI SCK
*/
#define BOARD_SERCOM3_GCLKGEN GCLK_CLKCTRL_GEN0
#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
#define BOARD_SERCOM3_FREQUENCY BOARD_GCLK0_FREQUENCY
#define BOARD_SERCOM5_CLKGEN GCLK_CLKCTRL_GEN0
#define BOARD_SERCOM5_MUX_SETTING (SPI_CTRLA_DOPO_DOPAD231 | SPI_CTRLA_DIPAD0)
#define BOARD_SERCOM5_PINMUX_PAD0 PINMUX_PB16C_SERCOM5_PAD0 /* SPI_MISO */
#define BOARD_SERCOM5_PINMUX_PAD1 0 /* microSD_SS */
#define BOARD_SERCOM5_PINMUX_PAD2 PINMUX_PB22D_SERCOM5_PAD2 /* SPI_MOSI */
#define BOARD_SERCOM5_PINMUX_PAD3 PINMUX_PB23D_SERCOM5_PAD3 /* SPI_SCK */
/* LED definitions ******************************************************************/
/* There are three LEDs on board the SAMD20 Xplained Pro board: The EDBG