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Diffstat (limited to 'keyboards/oddball/pmw/pmw.c')
| -rw-r--r-- | keyboards/oddball/pmw/pmw.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/keyboards/oddball/pmw/pmw.c b/keyboards/oddball/pmw/pmw.c deleted file mode 100644 index 51d6927024..0000000000 --- a/keyboards/oddball/pmw/pmw.c +++ /dev/null @@ -1,226 +0,0 @@ -/* Copyright 2020 Alexander Tulloh - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include "spi_master.h" -#include "quantum.h" -#include "pmw3360_srom_0x04.h" -#include "pmw.h" - -// registers -#define Product_ID 0x00 -#define Revision_ID 0x01 -#define Motion 0x02 -#define Delta_X_L 0x03 -#define Delta_X_H 0x04 -#define Delta_Y_L 0x05 -#define Delta_Y_H 0x06 -#define SQUAL 0x07 -#define Raw_Data_Sum 0x08 -#define Maximum_Raw_data 0x09 -#define Minimum_Raw_data 0x0A -#define Shutter_Lower 0x0B -#define Shutter_Upper 0x0C -#define Control 0x0D -#define Config1 0x0F -#define Config2 0x10 -#define Angle_Tune 0x11 -#define Frame_Capture 0x12 -#define SROM_Enable 0x13 -#define Run_Downshift 0x14 -#define Rest1_Rate_Lower 0x15 -#define Rest1_Rate_Upper 0x16 -#define Rest1_Downshift 0x17 -#define Rest2_Rate_Lower 0x18 -#define Rest2_Rate_Upper 0x19 -#define Rest2_Downshift 0x1A -#define Rest3_Rate_Lower 0x1B -#define Rest3_Rate_Upper 0x1C -#define Observation 0x24 -#define Data_Out_Lower 0x25 -#define Data_Out_Upper 0x26 -#define Raw_Data_Dump 0x29 -#define SROM_ID 0x2A -#define Min_SQ_Run 0x2B -#define Raw_Data_Threshold 0x2C -#define Config5 0x2F -#define Power_Up_Reset 0x3A -#define Shutdown 0x3B -#define Inverse_Product_ID 0x3F -#define LiftCutoff_Tune3 0x41 -#define Angle_Snap 0x42 -#define LiftCutoff_Tune1 0x4A -#define Motion_Burst 0x50 -#define LiftCutoff_Tune_Timeout 0x58 -#define LiftCutoff_Tune_Min_Length 0x5A -#define SROM_Load_Burst 0x62 -#define Lift_Config 0x63 -#define Raw_Data_Burst 0x64 -#define LiftCutoff_Tune2 0x65 - -#define PMW_CLOCK_SPEED 70000000 -#define MIN_CPI 100 -#define MAX_CPI 12000 -#define CPI_STEP 100 -#define CLAMP_CPI(value) value < MIN_CPI ? MIN_CPI : value > MAX_CPI ? MAX_CPI : value -#define SPI_MODE 3 -#define SPI_DIVISOR (F_CPU / PMW_CLOCK_SPEED) -#define US_BETWEEN_WRITES 180 -#define US_BETWEEN_READS 20 -#define US_BEFORE_MOTION 35 - -#define MSB1 0x80 - -extern const uint16_t pmw_firmware_length; -extern const uint8_t pmw_firmware_data[]; - -void pmw_spi_start(void){ - spi_start(SPI_SS_PIN, false, SPI_MODE, SPI_DIVISOR); -} - -void pmw_write(uint8_t reg_addr, uint8_t data){ - - pmw_spi_start(); - spi_write(reg_addr | MSB1 ); - spi_write(data); - spi_stop(); - wait_us(US_BETWEEN_WRITES); -} - -uint8_t pmw_read(uint8_t reg_addr){ - - pmw_spi_start(); - spi_write(reg_addr & 0x7f ); - uint8_t data = spi_read(); - spi_stop(); - wait_us(US_BETWEEN_READS); - - return data; -} - -void pmw_init() { - - setPinOutput(SPI_SS_PIN); - - spi_init(); - - // reboot - pmw_write(Power_Up_Reset, 0x5a); - wait_ms(50); - - // read registers and discard - pmw_read(Motion); - pmw_read(Delta_X_L); - pmw_read(Delta_X_H); - pmw_read(Delta_Y_L); - pmw_read(Delta_Y_H); - - // upload firmware - - // disable rest mode - pmw_write(Config2, 0x20); - - // enable initialisation - pmw_write(SROM_Enable, 0x1d); - - // wait a frame - wait_ms(10); - - // start SROM download - pmw_write(SROM_Enable, 0x18); - - // write the SROM file - - pmw_spi_start(); - - spi_write(SROM_Load_Burst | 0x80); - wait_us(15); - - // send all bytes of the firmware - unsigned char c; - for(int i = 0; i < pmw_firmware_length; i++){ - c = (unsigned char)pgm_read_byte(pmw_firmware_data + i); - spi_write(c); - wait_us(15); - } - - spi_stop(); - wait_us(US_BETWEEN_WRITES); - - // read id - pmw_read(SROM_ID); - - // wired mouse - pmw_write(Config2, 0x00); - - // first motion burst; write anything - pmw_write(Motion_Burst, 0xFF); - writePinLow(SPI_SS_PIN); -} - -config_pmw_t pmw_get_config(void) { - uint8_t config_1 = pmw_read(Config1); - return (config_pmw_t){ (config_1 & 0xFF) * CPI_STEP }; -} - -void pmw_set_config(config_pmw_t config) { - uint8_t config_1 = (CLAMP_CPI(config.cpi) / CPI_STEP) & 0xFF; - pmw_write(Config1, config_1); -} - -static int16_t convertDeltaToInt(uint8_t high, uint8_t low){ - - // join bytes into twos compliment - uint16_t twos_comp = (high << 8) | low; - - // convert twos comp to int - if (twos_comp & 0x8000) - return -1 * (~twos_comp + 1); - - return twos_comp; -} - -report_pmw_t pmw_get_report(void) { - - report_pmw_t report = {0, 0}; - - pmw_spi_start(); - - // start burst mode - spi_write(Motion_Burst & 0x7f); - - wait_us(US_BEFORE_MOTION); - - uint8_t motion = spi_read(); - - if(motion & 0x80) { - - // clear observation register - spi_read(); - - // delta registers - uint8_t delta_x_l = spi_read(); - uint8_t delta_x_h = spi_read(); - uint8_t delta_y_l = spi_read(); - uint8_t delta_y_h = spi_read(); - - report.x = convertDeltaToInt(delta_x_h, delta_x_l); - report.y = convertDeltaToInt(delta_y_h, delta_y_l); - } - - spi_stop(); - - return report; -} |