diff options
Diffstat (limited to 'gamepad.c')
| -rw-r--r-- | gamepad.c | 347 |
1 files changed, 347 insertions, 0 deletions
diff --git a/gamepad.c b/gamepad.c new file mode 100644 index 0000000..98253a5 --- /dev/null +++ b/gamepad.c @@ -0,0 +1,347 @@ +#include "defines.h" +#include <avr/io.h> +#include <util/delay.h> +#include "gamepad.h" +#include "bits.h" + +#ifdef NES_ENABLED + +void init_nes_gamepad() +{ + NES_PORT_DDR |= 1<<NES_LATCH_PIN; // Latch, output + NES_PORT_DDR |= 1<<NES_CLOCK_PIN; // Clock, output + NES_PORT_DDR &= ~(1<<NES_DATA_PIN); // Data, input +#ifdef NES_SECOND_ENABLED + NES_PORT_PORT |= 1<<NES_DATA_PIN; // Data, pull-up + NES_PORT_DDR &= ~(1<<NES_DATA_PIN2); // Data, input + NES_PORT_PORT |= 1<<NES_DATA_PIN2; // Data, pull-up +#endif +} + +uint16_t get_nes_gamepad() +{ + uint16_t gamepad_data = 0; + NES_PORT_PORT &= ~(1<<NES_LATCH_PIN); // Latch + int b; + for (b = 0; b < 8; b++) + { + NES_PORT_PORT &= ~(1<<NES_CLOCK_PIN); // Clock + _delay_us(10); + gamepad_data |= (((NES_PORT_PIN>>NES_DATA_PIN)&1)<<b); +#ifdef NES_SECOND_ENABLED + gamepad_data |= (((NES_PORT_PIN>>NES_DATA_PIN2)&1)<<b) * 0x100; +#endif + NES_PORT_PORT |= 1<<NES_CLOCK_PIN; // Clock + _delay_us(10); + } + NES_PORT_PORT |= 1<<NES_LATCH_PIN; // Latch + return gamepad_data; +} +#endif + +uint16_t get_nes_gamepad_decoded(void) +{ + return get_nes_gamepad() ^ 0xFFFF; +} + +#ifdef SNES_ENABLED +void init_snes_gamepad() +{ + SNES_PORT_DDR |= 1<<SNES_LATCH_PIN; // Latch, output + SNES_PORT_DDR |= 1<<SNES_CLOCK_PIN; // Clock, output + SNES_PORT_DDR &= ~(1<<SNES_DATA_PIN); // Data, input + SNES_PORT_PORT |= 1<<SNES_DATA_PIN; // Data, pull-up +} + +uint16_t get_snes_gamepad() +{ + uint16_t gamepad_data = 0; + SNES_PORT_PORT &= ~(1<<SNES_LATCH_PIN); // Latch + int b; + for (b = 0; b < 16; b++) + { + SNES_PORT_PORT &= ~(1<<SNES_CLOCK_PIN); // Clock + _delay_us(10); + gamepad_data |= ((uint16_t)((SNES_PORT_PIN>>SNES_DATA_PIN)&1)<<b); + SNES_PORT_PORT |= 1<<SNES_CLOCK_PIN; // Clock + _delay_us(10); + } + SNES_PORT_PORT |= 1<<SNES_LATCH_PIN; // Latch + return gamepad_data; +} +#endif + +#ifdef N64_ENABLED +void init_n64_gamepad() +{ + TCCR0 |= _BV(CS00); // Timer + N64_PORT_DDR &= ~(1<<N64_DATA_PIN); // Input + N64_PORT_PORT &= ~(1<<N64_DATA_PIN); // No pull-up (using external resistor) +} + +int get_n64_gamepad(uint8_t* data) +{ + int b, bit; + N64SEND_0; N64SEND_0; N64SEND_0; N64SEND_0; N64SEND_0; N64SEND_0; N64SEND_0; N64SEND_1; N64SEND_STOP; + for (b = 0; b < 4; b++) + { + data[b] = 0; + for (bit = 0; bit < 8; bit++) + { + TCNT0 = 0; + while (!N64SIGNAL) if (TCNT0 >= 0xF0) return 0; + TCNT0 = 0; + while(N64SIGNAL) if (TCNT0 >= 0xF0) return 0; + data[b] = data[b]<<1; + if (TCNT0 < 0x24 * F_CPU / 20000000UL) data[b] |= 1; + } + } + return 1; +} +#endif + +#ifdef SMD_ENABLED +void init_smd_gamepad() +{ + SMD_SELECT_PORT_DDR |= 1<<SMD_SELECT_PIN; // Select, output + SMD_DATA_PORT_DDR &= ~(1<<SMD_DATA0_PIN); // Data 0, input + SMD_DATA_PORT_DDR &= ~(1<<SMD_DATA1_PIN); // Data 1, input + SMD_DATA_PORT_DDR &= ~(1<<SMD_DATA2_PIN); // Data 2, input + SMD_DATA_PORT_DDR &= ~(1<<SMD_DATA3_PIN); // Data 3, input + SMD_DATA_PORT_DDR &= ~(1<<SMD_DATA4_PIN); // Data 4, input + SMD_DATA_PORT_DDR &= ~(1<<SMD_DATA5_PIN); // Data 5, input + SMD_DATA_PORT_PORT |= 1<<SMD_DATA0_PIN; // Data 0, pull-up + SMD_DATA_PORT_PORT |= 1<<SMD_DATA1_PIN; // Data 1, pull-up + SMD_DATA_PORT_PORT |= 1<<SMD_DATA2_PIN; // Data 2, pull-up + SMD_DATA_PORT_PORT |= 1<<SMD_DATA3_PIN; // Data 3, pull-up + SMD_DATA_PORT_PORT |= 1<<SMD_DATA4_PIN; // Data 4, pull-up + SMD_DATA_PORT_PORT |= 1<<SMD_DATA5_PIN; // Data 5, pull-up +#ifdef SMD_SECOND_ENABLED + SMD_DATA_PORT_DDR2 &= ~(1<<SMD_DATA0_PIN2); // Data 0, input + SMD_DATA_PORT_DDR2 &= ~(1<<SMD_DATA1_PIN2); // Data 1, input + SMD_DATA_PORT_DDR2 &= ~(1<<SMD_DATA2_PIN2); // Data 2, input + SMD_DATA_PORT_DDR2 &= ~(1<<SMD_DATA3_PIN2); // Data 3, input + SMD_DATA_PORT_DDR2 &= ~(1<<SMD_DATA4_PIN2); // Data 4, input + SMD_DATA_PORT_DDR2 &= ~(1<<SMD_DATA5_PIN2); // Data 5, input + SMD_DATA_PORT_PORT2 |= 1<<SMD_DATA0_PIN2; // Data 0, pull-up + SMD_DATA_PORT_PORT2 |= 1<<SMD_DATA1_PIN2; // Data 1, pull-up + SMD_DATA_PORT_PORT2 |= 1<<SMD_DATA2_PIN2; // Data 2, pull-up + SMD_DATA_PORT_PORT2 |= 1<<SMD_DATA3_PIN2; // Data 3, pull-up + SMD_DATA_PORT_PORT2 |= 1<<SMD_DATA4_PIN2; // Data 4, pull-up + SMD_DATA_PORT_PORT2 |= 1<<SMD_DATA5_PIN2; // Data 5, pull-up +#endif +} + +uint32_t get_smd_gamepad() +{ + uint8_t gamepad_data_low = 0xFF; + uint8_t gamepad_data_high = 0xFF; + uint8_t gamepad_data_low2 = 0xFF; + uint8_t gamepad_data_high2 = 0xFF; + SMD_SELECT_PORT_PORT &= ~(1<<SMD_SELECT_PIN); // Select - low + _delay_us(50); + gamepad_data_low = ((SMD_DATA_PORT_PIN>>SMD_DATA0_PIN)&1) + | (((SMD_DATA_PORT_PIN>>SMD_DATA1_PIN)&1)<<1) + | (((SMD_DATA_PORT_PIN>>SMD_DATA2_PIN)&1)<<2) + | (((SMD_DATA_PORT_PIN>>SMD_DATA3_PIN)&1)<<3) + | (((SMD_DATA_PORT_PIN>>SMD_DATA4_PIN)&1)<<4) + | (((SMD_DATA_PORT_PIN>>SMD_DATA5_PIN)&1)<<5); +#ifdef SMD_SECOND_ENABLED + gamepad_data_low2 = ((SMD_DATA_PORT_PIN2>>SMD_DATA0_PIN2)&1) + | (((SMD_DATA_PORT_PIN2>>SMD_DATA1_PIN2)&1)<<1) + | (((SMD_DATA_PORT_PIN2>>SMD_DATA2_PIN2)&1)<<2) + | (((SMD_DATA_PORT_PIN2>>SMD_DATA3_PIN2)&1)<<3) + | (((SMD_DATA_PORT_PIN2>>SMD_DATA4_PIN2)&1)<<4) + | (((SMD_DATA_PORT_PIN2>>SMD_DATA5_PIN2)&1)<<5); +#endif + SMD_SELECT_PORT_PORT |= 1<<SMD_SELECT_PIN; // Select - high + _delay_us(50); + gamepad_data_high = ((SMD_DATA_PORT_PIN>>SMD_DATA0_PIN)&1) + | (((SMD_DATA_PORT_PIN>>SMD_DATA1_PIN)&1)<<1) + | (((SMD_DATA_PORT_PIN>>SMD_DATA2_PIN)&1)<<2) + | (((SMD_DATA_PORT_PIN>>SMD_DATA3_PIN)&1)<<3) + | (((SMD_DATA_PORT_PIN>>SMD_DATA4_PIN)&1)<<4) + | (((SMD_DATA_PORT_PIN>>SMD_DATA5_PIN)&1)<<5); +#ifdef SMD_SECOND_ENABLED + gamepad_data_high2 = ((SMD_DATA_PORT_PIN2>>SMD_DATA0_PIN2)&1) + | (((SMD_DATA_PORT_PIN2>>SMD_DATA1_PIN2)&1)<<1) + | (((SMD_DATA_PORT_PIN2>>SMD_DATA2_PIN2)&1)<<2) + | (((SMD_DATA_PORT_PIN2>>SMD_DATA3_PIN2)&1)<<3) + | (((SMD_DATA_PORT_PIN2>>SMD_DATA4_PIN2)&1)<<4) + | (((SMD_DATA_PORT_PIN2>>SMD_DATA5_PIN2)&1)<<5); +#endif + return ((uint32_t)gamepad_data_high2<<24) | ((uint32_t)gamepad_data_low2<<16) | ((uint32_t)gamepad_data_high<<8) | gamepad_data_low; +} +#endif + +uint32_t get_smd_gamepad_decoded(void) +{ + uint32_t result = 0; + uint8_t b, c, d; + for (c = 0; c < 4; c++) + { + uint32_t smd_gamepad_data = get_smd_gamepad(); + for (d = 0; d < 2; d++) + { + if ((smd_gamepad_data & 0b00001111) || (c < 2)) // 3-button mode + { + for (b = 0; b <= 13; b++) + { + if (!((smd_gamepad_data>>b)&1)) + { + switch (b) + { + case 0: // Up + set_bit(result, 8 + d*16); + break; + case 1: // Down + set_bit(result, 9 + d*16); + break; + case 4: // A + set_bit(result, 0 + d*16); + break; + case 5: // Start + set_bit(result, 6 + d*16); + break; + case 10: // Left + set_bit(result, 10 + d*16); + break; + case 11: // Right + set_bit(result, 11 + d*16); + break; + case 12: // B + set_bit(result, 1 + d*16); + break; + case 13: // C + set_bit(result, 2 + d*16); + break; + } + } + } + } else { // 6-button mode + for (b = 4; b <= 11; b++) + { + if (!((smd_gamepad_data>>b)&1)) + { + switch (b) + { + case 4: // A + set_bit(result, 0 + d*16); + break; + case 5: // Start + set_bit(result, 6 + d*16); + break; + case 8: // Z + set_bit(result, 5 + d*16); + break; + case 9: // Y + set_bit(result, 4 + d*16); + break; + case 10: // X + set_bit(result, 3 + d*16); + break; + case 11: // Mode + set_bit(result, 7 + d*16); + break; + } + } + } + } + smd_gamepad_data >>= 16; + } + } + return result; +} + +#ifdef DUALSHOCK_ENABLED +void init_dualshock_gamepad() +{ + DUALSHOCK_PORT_DDR |= (1<<DUALSHOCK_COMMAND_PIN); // Command pin - output + DUALSHOCK_PORT_PORT |= (1<<DUALSHOCK_COMMAND_PIN); // Command pin - login high + DUALSHOCK_PORT_DDR &= ~(1<<DUALSHOCK_DATA_PIN); // Data pin - input + DUALSHOCK_PORT_PORT |= (1<<DUALSHOCK_DATA_PIN); // Data pin - pull-up + DUALSHOCK_PORT_DDR |= (1<<DUALSHOCK_ATTENTION_PIN); // Attention - output + DUALSHOCK_PORT_PORT |= (1<<DUALSHOCK_ATTENTION_PIN); // Attention - logic high + DUALSHOCK_PORT_DDR |= (1<<DUALSHOCK_CLOCK_PIN); // Clock - output + DUALSHOCK_PORT_PORT |= (1<<DUALSHOCK_CLOCK_PIN); // Clock - logic high + /* + DUALSHOCK_PORT_DDR &= ~(1<<DUALSHOCK_ACK_PIN); // Ack pin - input + DUALSHOCK_PORT_PORT |= (1<<DUALSHOCK_ACK_PIN); // Ack pin - pull-up + */ +} + +int dualshock_command(uint8_t* command, uint8_t* data, int length) +{ + DUALSHOCK_PORT_PORT &= ~(1<<DUALSHOCK_ATTENTION_PIN); // Attention! + _delay_us(20); + int b, bit; + for (b = 0; b < length; b++) // Each byte... + { + data[b] = 0; + for (bit = 0; bit < 8; bit++) + { + if ((command[b] >> bit) & 1) // 1? + DUALSHOCK_PORT_PORT |= (1<<DUALSHOCK_COMMAND_PIN); // 1! + else DUALSHOCK_PORT_PORT &= ~(1<<DUALSHOCK_COMMAND_PIN); // 0! + DUALSHOCK_PORT_PORT &= ~(1<<DUALSHOCK_CLOCK_PIN); // Clock - logic low + _delay_us(20); + if ((DUALSHOCK_PORT_PIN >> DUALSHOCK_DATA_PIN) & 1) // Reading data... 1? + data[b] |= (1<<bit); // 1! + DUALSHOCK_PORT_PORT |= (1<<DUALSHOCK_CLOCK_PIN); // Clock - logic high + _delay_us(20); + } + if (b == 1 && data[1] == 0xFF) // Alternative device detection + { + DUALSHOCK_PORT_PORT |= (1<<DUALSHOCK_ATTENTION_PIN); // No attention... + return 0; + } + /* + if (b<length-1) // Waiting for ACK + { + int t; + for (t = 0; t < 50; t++) + { + if (!((DUALSHOCK_PORT_PIN >> DUALSHOCK_ACK_PIN)&1)) // ACK reveived + { + ok = 1; + break; + } + _delay_us(1); + } + if ((b < 2) && !ok) return 0; // No ACK in first two bytes? Aboooort! Saving time + } + */ + } + DUALSHOCK_PORT_PORT |= (1<<DUALSHOCK_ATTENTION_PIN); // No attention... + _delay_us(20); + return 1; +} + +int get_dualshock_gamepad(uint8_t* data, int size, uint8_t motor_small, uint8_t motor_large) // pointer to uint8_t[21], number of bytes to request, vibration... +{ + static char dualshock_configered = 0; + + uint8_t command_query[21] = {0x01, 0x42, 0, motor_small, motor_large, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; + if (!dualshock_command(command_query, data, size)) + { + dualshock_configered = 0; + return 0; + } + if (!dualshock_configered) // Need to reconfigure dualshock + { + uint8_t command_config_mode[5] = {0x01, 0x43, 0x00, 0x01, 0x00}; + if (!dualshock_command(command_config_mode, data, sizeof(command_config_mode))) return 0; + uint8_t command_analog_mode[9] = {0x01, 0x44, 0x00, 0x01, 0x03, 0x00, 0x00, 0x00, 0x00}; + if (!dualshock_command(command_analog_mode, data, sizeof(command_analog_mode))) return 0; + uint8_t command_config_motors[9] = {0x01, 0x4D, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF}; + if (!dualshock_command(command_config_motors, data, sizeof(command_config_motors))) return 0; + uint8_t command_config_pressure[9] = {0x01, 0x4F, 0x00, 0xFF, 0xFF, 0x03, 0x00, 0x00, 0x00}; + if (!dualshock_command(command_config_pressure, data, sizeof(command_config_pressure))) return 0; + uint8_t command_config_mode_exit[8] = {0x01, 0x43, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF}; + if (!dualshock_command(command_config_mode_exit, data, sizeof(command_config_mode_exit))) return 0; + dualshock_configered = 1; + if (!dualshock_command(command_query, data, size)) return 0; + } + return 1; +} +#endif |