diff options
Diffstat (limited to 'keyboards/oddball/adns.c')
| -rw-r--r-- | keyboards/oddball/adns.c | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/keyboards/oddball/adns.c b/keyboards/oddball/adns.c deleted file mode 100644 index 4582be1f2c..0000000000 --- a/keyboards/oddball/adns.c +++ /dev/null @@ -1,270 +0,0 @@ -#include <avr/io.h> -#include <avr/interrupt.h> -#include "quantum.h" -#include "pointing_device.h" -#include "adns9800_srom_A4.h" -#include <LUFA/Drivers/Peripheral/SPI.h> - -// registers -#define REG_Product_ID 0x00 -#define REG_Revision_ID 0x01 -#define REG_Motion 0x02 -#define REG_Delta_X_L 0x03 -#define REG_Delta_X_H 0x04 -#define REG_Delta_Y_L 0x05 -#define REG_Delta_Y_H 0x06 -#define REG_SQUAL 0x07 -#define REG_Pixel_Sum 0x08 -#define REG_Maximum_Pixel 0x09 -#define REG_Minimum_Pixel 0x0a -#define REG_Shutter_Lower 0x0b -#define REG_Shutter_Upper 0x0c -#define REG_Frame_Period_Lower 0x0d -#define REG_Frame_Period_Upper 0x0e -#define REG_Configuration_I 0x0f -#define REG_Configuration_II 0x10 -#define REG_Frame_Capture 0x12 -#define REG_SROM_Enable 0x13 -#define REG_Run_Downshift 0x14 -#define REG_Rest1_Rate 0x15 -#define REG_Rest1_Downshift 0x16 -#define REG_Rest2_Rate 0x17 -#define REG_Rest2_Downshift 0x18 -#define REG_Rest3_Rate 0x19 -#define REG_Frame_Period_Max_Bound_Lower 0x1a -#define REG_Frame_Period_Max_Bound_Upper 0x1b -#define REG_Frame_Period_Min_Bound_Lower 0x1c -#define REG_Frame_Period_Min_Bound_Upper 0x1d -#define REG_Shutter_Max_Bound_Lower 0x1e -#define REG_Shutter_Max_Bound_Upper 0x1f -#define REG_LASER_CTRL0 0x20 -#define REG_Observation 0x24 -#define REG_Data_Out_Lower 0x25 -#define REG_Data_Out_Upper 0x26 -#define REG_SROM_ID 0x2a -#define REG_Lift_Detection_Thr 0x2e -#define REG_Configuration_V 0x2f -#define REG_Configuration_IV 0x39 -#define REG_Power_Up_Reset 0x3a -#define REG_Shutdown 0x3b -#define REG_Inverse_Product_ID 0x3f -#define REG_Motion_Burst 0x50 -#define REG_SROM_Load_Burst 0x62 -#define REG_Pixel_Burst 0x64 - -// pins -#define NCS 0 - -extern const uint16_t firmware_length; -extern const uint8_t firmware_data[]; - -enum motion_burst_property{ - motion = 0, - observation, - delta_x_l, - delta_x_h, - delta_y_l, - delta_y_h, - squal, - pixel_sum, - maximum_pixel, - minimum_pixel, - shutter_upper, - shutter_lower, - frame_period_upper, - frame_period_lower, - end_data -}; - -// used to track the motion delta between updates -volatile int32_t delta_x; -volatile int32_t delta_y; - -void adns_begin(void){ - PORTB &= ~ (1 << NCS); -} - -void adns_end(void){ - PORTB |= (1 << NCS); -} - -void adns_write(uint8_t reg_addr, uint8_t data){ - - adns_begin(); - - //send address of the register, with MSBit = 1 to indicate it's a write - SPI_TransferByte(reg_addr | 0x80 ); - SPI_TransferByte(data); - - // tSCLK-NCS for write operation - wait_us(20); - - adns_end(); - - // tSWW/tSWR (=120us) minus tSCLK-NCS. Could be shortened, but is looks like a safe lower bound - wait_us(100); -} - -uint8_t adns_read(uint8_t reg_addr){ - - adns_begin(); - - // send adress of the register, with MSBit = 0 to indicate it's a read - SPI_TransferByte(reg_addr & 0x7f ); - uint8_t data = SPI_TransferByte(0); - - // tSCLK-NCS for read operation is 120ns - wait_us(1); - - adns_end(); - - // tSRW/tSRR (=20us) minus tSCLK-NCS - wait_us(19); - - return data; -} - -void pointing_device_init(void) { - - if(!is_keyboard_master()) - return; - - // interrupt 2 - EICRA &= ~(1 << 4); - EICRA |= (1 << 5); - EIMSK |= (1<<INT2); - - // mode 3 - SPI_Init( - SPI_SPEED_FCPU_DIV_8 | - SPI_ORDER_MSB_FIRST | - SPI_SCK_LEAD_FALLING | - SPI_SAMPLE_TRAILING | - SPI_MODE_MASTER); - - // set B0 output - DDRB |= (1 << 0); - - // reset serial port - adns_end(); - adns_begin(); - adns_end(); - - // reboot - adns_write(REG_Power_Up_Reset, 0x5a); - wait_ms(50); - - // read registers and discard - adns_read(REG_Motion); - adns_read(REG_Delta_X_L); - adns_read(REG_Delta_X_H); - adns_read(REG_Delta_Y_L); - adns_read(REG_Delta_Y_H); - - // upload firmware - - // set the configuration_IV register in 3k firmware mode - // bit 1 = 1 for 3k mode, other bits are reserved - adns_write(REG_Configuration_IV, 0x02); - - // write 0x1d in SROM_enable reg for initializing - adns_write(REG_SROM_Enable, 0x1d); - - // wait for more than one frame period - // assume that the frame rate is as low as 100fps... even if it should never be that low - wait_ms(10); - - // write 0x18 to SROM_enable to start SROM download - adns_write(REG_SROM_Enable, 0x18); - - // write the SROM file (=firmware data) - adns_begin(); - - // write burst destination adress - SPI_TransferByte(REG_SROM_Load_Burst | 0x80); - wait_us(15); - - // send all bytes of the firmware - unsigned char c; - for(int i = 0; i < firmware_length; i++){ - c = (unsigned char)pgm_read_byte(firmware_data + i); - SPI_TransferByte(c); - wait_us(15); - } - - adns_end(); - - wait_ms(10); - - // enable laser(bit 0 = 0b), in normal mode (bits 3,2,1 = 000b) - // reading the actual value of the register is important because the real - // default value is different from what is said in the datasheet, and if you - // change the reserved bytes (like by writing 0x00...) it would not work. - uint8_t laser_ctrl0 = adns_read(REG_LASER_CTRL0); - adns_write(REG_LASER_CTRL0, laser_ctrl0 & 0xf0); - - wait_ms(1); - - // set the configuration_I register to set the CPI - // 0x01 = 50, minimum - // 0x44 = 3400, default - // 0x8e = 7100 - // 0xA4 = 8200, maximum - adns_write(REG_Configuration_I, 0x04); - - wait_ms(100); -} - -void pointing_device_task(void) { - - if(!is_keyboard_master()) - return; - - report_mouse_t report = pointing_device_get_report(); - - // clamp deltas from -127 to 127 - report.x = delta_x < -127 ? 127 : delta_x > 127 ? 127 : delta_x; - report.x = -report.x; - - report.y = delta_y < -127 ? 127 : delta_y > 127 ? 127 : delta_y; - - // reset deltas - delta_x = 0; - delta_y = 0; - - pointing_device_set_report(report); - pointing_device_send(); -} - -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 ^ 0xffff) + 1); - - return twos_comp; -} - -ISR(INT2_vect) { - // called on interrupt 2 when sensed motion - // copy burst data from the respective registers - - adns_begin(); - - // send adress of the register, with MSBit = 1 to indicate it's a write - SPI_TransferByte(REG_Motion_Burst & 0x7f); - - uint8_t burst_data[pixel_sum]; - - for (int i = 0; i < pixel_sum; ++i) { - burst_data[i] = SPI_TransferByte(0); - } - - delta_x += convertDeltaToInt(burst_data[delta_x_h], burst_data[delta_x_l]); - delta_y += convertDeltaToInt(burst_data[delta_y_h], burst_data[delta_y_l]); - - adns_end(); -} |