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#include "defines.h"
#include <avr/io.h>
#include <util/delay.h>
#include "gamepad.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
NES_PORT_PORT |= 1<<NES_DATA_PIN; // Data, pull-up
}
uint8_t get_nes_gamepad()
{
uint8_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);
NES_PORT_PORT |= 1<<NES_CLOCK_PIN; // Clock
_delay_us(10);
}
NES_PORT_PORT |= 1<<NES_LATCH_PIN; // Latch
return gamepad_data;
}
#endif
#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
}
uint16_t get_smd_gamepad()
{
uint8_t gamepad_data_low = 0;
uint8_t gamepad_data_high = 0;
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);
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);
return ((uint16_t)gamepad_data_high<<8) | gamepad_data_low;
}
#endif
#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
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