diff options
Diffstat (limited to 'tmk_core/protocol/arm_atsam/spi.h')
| -rw-r--r-- | tmk_core/protocol/arm_atsam/spi.h | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/tmk_core/protocol/arm_atsam/spi.h b/tmk_core/protocol/arm_atsam/spi.h index 3412dfc36..4739b775d 100644 --- a/tmk_core/protocol/arm_atsam/spi.h +++ b/tmk_core/protocol/arm_atsam/spi.h @@ -18,21 +18,28 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #ifndef _SPI_H_ #define _SPI_H_ -//TODO: PS: Should bring ports to keyboard configuration +/* Macros for Shift Register control */ +#define SR_EXP_RCLK_LO PORT->Group[SR_EXP_RCLK_PORT].OUTCLR.reg = (1 << SR_EXP_RCLK_PIN) +#define SR_EXP_RCLK_HI PORT->Group[SR_EXP_RCLK_PORT].OUTSET.reg = (1 << SR_EXP_RCLK_PIN) +#define SR_EXP_OE_N_ENA PORT->Group[SR_EXP_OE_N_PORT].OUTCLR.reg = (1 << SR_EXP_OE_N_PIN) +#define SR_EXP_OE_N_DIS PORT->Group[SR_EXP_OE_N_PORT].OUTSET.reg = (1 << SR_EXP_OE_N_PIN) -#define SCSPI SERCOM2 +/* Determine bits to set for mux selection */ +#if SR_EXP_DATAOUT_PIN % 2 == 0 +#define SR_EXP_DATAOUT_MUX_SEL PMUXE +#else +#define SR_EXP_DATAOUT_MUX_SEL PMUXO +#endif -#define P14_DIR 0x00004000 /* PIN14 DIR Bit */ -#define P14_OUT 0x00004000 /* PIN14 OUT Bit */ -#define P15_DIR 0x00008000 /* PIN15 DIR Bit */ -#define P15_OUT 0x00008000 /* PIN15 OUT Bit */ - -#define SC2_RCLCK_LO REG_PORT_OUTCLR1 = P14_OUT /* PB14 Low, SC2_RCLCK Low */ -#define SC2_RCLCK_HI REG_PORT_OUTSET1 = P14_OUT /* PB14 High, SC2_RCLCK High */ -#define SC2_OE_ENA REG_PORT_OUTCLR1 = P15_OUT /* PB15 Low, SC2_OE_N Low (Shift register enabled) */ -#define SC2_OE_DIS REG_PORT_OUTSET1 = P15_OUT /* PB15 High, SC2_OE_N High (Shift register disabled) */ -#define SC2_DIRSET REG_PORT_DIRSET1 = P14_DIR | P15_DIR; /* PB14 PB15 OUT */ +/* Determine bits to set for mux selection */ +#if SR_EXP_SCLK_PIN % 2 == 0 +#define SR_EXP_SCLK_MUX_SEL PMUXE +#else +#define SR_EXP_SCLK_MUX_SEL PMUXO +#endif +/* Data structure to define Shift Register output expander hardware */ +/* This structure gets shifted into registers LSB first */ typedef union { struct { uint16_t RSVD4:1; /*!< bit: 0 */ @@ -53,11 +60,11 @@ typedef union { uint16_t HUB_CONNECT:1; /*!< bit: 15 SIGNAL VBUS CONNECT TO USB HUB WHEN 1 */ } bit; /*!< Structure used for bit access */ uint16_t reg; /*!< Type used for register access */ -} Srdata_t; +} sr_exp_t; -extern Srdata_t srdata; +extern sr_exp_t sr_exp_data; -void SPI_WriteSRData(void); -void SPI_Init(void); +void SR_EXP_WriteData(void); +void SR_EXP_Init(void); #endif //_SPI_H_ |