2 Copyright 2018 Massdrop Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 /* Macros for Shift Register control */
22 #define SR_EXP_RCLK_LO PORT->Group[SR_EXP_RCLK_PORT].OUTCLR.reg = (1 << SR_EXP_RCLK_PIN)
23 #define SR_EXP_RCLK_HI PORT->Group[SR_EXP_RCLK_PORT].OUTSET.reg = (1 << SR_EXP_RCLK_PIN)
24 #define SR_EXP_OE_N_ENA PORT->Group[SR_EXP_OE_N_PORT].OUTCLR.reg = (1 << SR_EXP_OE_N_PIN)
25 #define SR_EXP_OE_N_DIS PORT->Group[SR_EXP_OE_N_PORT].OUTSET.reg = (1 << SR_EXP_OE_N_PIN)
27 /* Determine bits to set for mux selection */
28 #if SR_EXP_DATAOUT_PIN % 2 == 0
29 #define SR_EXP_DATAOUT_MUX_SEL PMUXE
31 #define SR_EXP_DATAOUT_MUX_SEL PMUXO
34 /* Determine bits to set for mux selection */
35 #if SR_EXP_SCLK_PIN % 2 == 0
36 #define SR_EXP_SCLK_MUX_SEL PMUXE
38 #define SR_EXP_SCLK_MUX_SEL PMUXO
41 /* Data structure to define Shift Register output expander hardware */
42 /* This structure gets shifted into registers LSB first */
45 uint16_t RSVD4:1; /*!< bit: 0 */
46 uint16_t RSVD3:1; /*!< bit: 1 */
47 uint16_t RSVD2:1; /*!< bit: 2 */
48 uint16_t RSVD1:1; /*!< bit: 3 */
49 uint16_t SDB_N:1; /*!< bit: 4 SHUTDOWN THE CHIP WHEN 0, RUN WHEN 1 */
50 uint16_t IRST:1; /*!< bit: 5 RESET THE IS3733 I2C WHEN 1, RUN WHEN 0 */
51 uint16_t SRC_2:1; /*!< bit: 6 ADVERTISE A SOURCE TO USBC-2 CC */
52 uint16_t SRC_1:1; /*!< bit: 7 ADVERTISE A SOURCE TO USBC-1 CC */
53 uint16_t E_VBUS_2:1; /*!< bit: 8 ENABLE 5V OUT TO USBC-2 WHEN 1 */
54 uint16_t E_VBUS_1:1; /*!< bit: 9 ENABLE 5V OUT TO USBC-1 WHEN 1 */
55 uint16_t E_DN1_N:1; /*!< bit: 10 ENABLE DN1 1:2 MUX WHEN 0 */
56 uint16_t S_DN1:1; /*!< bit: 11 SELECT DN1 PATH 0:USBC-1, 1:USBC-2 */
57 uint16_t E_UP_N:1; /*!< bit: 12 ENABLE SUP 1:2 MUX WHEN 0 */
58 uint16_t S_UP:1; /*!< bit: 13 SELECT UP PATH 0:USBC-1, 1:USBC-2 */
59 uint16_t HUB_RESET_N:1; /*!< bit: 14 RESET USB HUB WHEN 0, RUN WHEN 1 */
60 uint16_t HUB_CONNECT:1; /*!< bit: 15 SIGNAL VBUS CONNECT TO USB HUB WHEN 1 */
61 } bit; /*!< Structure used for bit access */
62 uint16_t reg; /*!< Type used for register access */
65 extern sr_exp_t sr_exp_data;
67 void SR_EXP_WriteData(void);
68 void SR_EXP_Init(void);