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#include "defines.h" |
#include "CONTROLLERS.h" |
#include "I2C1.h" |
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static CONTROLLER_DATA *ctrl_data_p; |
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void Controller_Init(CONTROLLER_DATA *data, |
void (*change_callback)(uint8_t controller, CTRL_BTN_STATUS values)) { |
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if (data != NULL) |
ctrl_data_p = data; |
ctrl_data_p->change_callback = change_callback; |
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// Variable initialization |
int i, j; |
for (i = 0; i < CONTROLLER_MAX_COUNT; i++) { |
ctrl_data_p->connected_controllers[i] = 0x0; |
ctrl_data_p->led_status[i].w[i] = 0x0; |
ctrl_data_p->btn_prev[i].w = 0x0; |
ctrl_data_p->btn_curr[i].w = 0x0; |
for (j = 0; j < 16; j++) { |
ctrl_data_p->led_status[i].w[j] = 0x0; |
} |
} |
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ctrl_data_p->connected_count = 0x0; |
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// Poll to see which controllers are connected |
Controller_Poll_Connected(); |
} |
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void Controller_Poll_Connected(void) { |
uint8_t buffer[2]; |
uint8_t result, i; |
uint8_t address = CONTROLLER_PREFIX_ADDRESS + CONTROLLER_START_ADDRESS; |
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// Attempt to contact each controller to see if its connected |
for (i = 0; i < CONTROLLER_MAX_COUNT; i++) { |
I2C1_Master_Restart(address + i, CONTROLLER_CMD_READ, 1); |
do { |
result = I2C1_Get_Status(); |
} while (!result); |
if (result == I2C1_RECV_OK) { |
uint8_t length = I2C1_Read_Buffer(buffer); |
// If a controller is connected, save its address |
ctrl_data_p->connected_controllers[ctrl_data_p->connected_count] = address + i; |
ctrl_data_p->connected_count++; |
} |
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// A small delay is needed between polls |
Delay_MS(1); |
} |
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// Show the number of controllers connected |
if (ctrl_data_p->connected_count & 0x1) |
LED1_LAT = 1; |
if (ctrl_data_p->connected_count & 0x2) |
LED2_LAT = 1; |
if (ctrl_data_p->connected_count & 0x4) |
LED3_LAT = 1; |
if (ctrl_data_p->connected_count & 0x8) |
LED4_LAT = 1; |
} |
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void Controller_Update(void) { |
uint8_t buffer[2]; |
uint8_t result, length, i, j; |
CTRL_BTN_STATUS btn_change; |
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for (i = 0; i < ctrl_data_p->connected_count; i++) { |
// Store the last read values |
ctrl_data_p->btn_prev[i] = ctrl_data_p->btn_curr[i]; |
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// Read in the button values for each controller |
I2C1_Master_Restart(ctrl_data_p->connected_controllers[i], CONTROLLER_CMD_READ, 1); |
do { |
result = I2C1_Get_Status(); |
} while (!result); |
// Save the read values |
length = I2C1_Read_Buffer(buffer); |
ctrl_data_p->btn_curr[i].w = buffer[0]; |
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// Determine if a change was made between the current and previous values |
if (ctrl_data_p->btn_curr[i].w != ctrl_data_p->btn_prev[i].w) { |
// Determine if a button was pressed (unpressed->pressed) |
btn_change.w = ctrl_data_p->btn_prev[i].w ^ ctrl_data_p->btn_curr[i].w; |
btn_change.w &= ctrl_data_p->btn_curr[i].w; |
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// If a button was pressed, call the saved callback |
if (btn_change.w) { |
if (ctrl_data_p->change_callback != NULL) { |
ctrl_data_p->change_callback(i, btn_change); |
} |
} |
} |
} |
} |
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void Controller_Set_Left_Leds(uint8_t controller, uint8_t value) { |
uint8_t result, i; |
uint8_t buffer[18]; |
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for (i = 0; i < 4; i++) { |
if (value & (0x01 << i)) |
ctrl_data_p->led_status[controller].w[i+12] = CONTROLLER_BRIGHTNESS_HIGH; |
else |
ctrl_data_p->led_status[controller].w[i+12] = 0x00; |
} |
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// Write the LED value to the controller |
buffer[0] = CONTROLLER_CMD_WRITE; |
for (i = 0; i < 16; i++) |
buffer[i+1] = ctrl_data_p->led_status[controller].w[i]; |
I2C1_Master_Send(ctrl_data_p->connected_controllers[controller], buffer, 17); |
do { |
result = I2C1_Get_Status(); |
} while (!result); |
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Delay_MS(1); |
} |
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void Controller_Set_Middle_Leds(uint8_t controller, uint8_t value) { |
uint8_t result, i; |
uint8_t buffer[18]; |
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for (i = 0; i < 8; i++) { |
if (value & (0x01 << i)) |
ctrl_data_p->led_status[controller].w[i] = CONTROLLER_BRIGHTNESS_HIGH; |
else |
ctrl_data_p->led_status[controller].w[i] = 0x00; |
} |
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// Write the LED value to the controller |
buffer[0] = CONTROLLER_CMD_WRITE; |
for (i = 0; i < 16; i++) |
buffer[i+1] = ctrl_data_p->led_status[controller].w[i]; |
I2C1_Master_Send(ctrl_data_p->connected_controllers[controller], buffer, 17); |
do { |
result = I2C1_Get_Status(); |
} while (!result); |
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Delay_MS(1); |
} |
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void Controller_Set_Right_Leds(uint8_t controller, uint8_t value) { |
uint8_t result, i; |
uint8_t buffer[18]; |
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for (i = 0; i < 4; i++) { |
if (value & (0x01 << i)) |
ctrl_data_p->led_status[controller].w[i+8] = CONTROLLER_BRIGHTNESS_HIGH; |
else |
ctrl_data_p->led_status[controller].w[i+8] = 0x00; |
} |
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// Write the LED value to the controller |
buffer[0] = CONTROLLER_CMD_WRITE; |
for (i = 0; i < 16; i++) |
buffer[i+1] = ctrl_data_p->led_status[controller].w[i]; |
I2C1_Master_Send(ctrl_data_p->connected_controllers[controller], buffer, 17); |
do { |
result = I2C1_Get_Status(); |
} while (!result); |
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Delay_MS(1); |
} |
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uint8_t Controller_Get_Connected(void) { |
return ctrl_data_p->connected_count; |
} |
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void Controller_Set_Active(uint8_t controller) { |
uint8_t buffer[2]; |
uint8_t result; |
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buffer[0] = CONTROLLER_CMD_ACTIVE; |
I2C1_Master_Send(ctrl_data_p->connected_controllers[controller], buffer, 1); |
do { |
result = I2C1_Get_Status(); |
} while (!result); |
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Delay_MS(1); |
} |
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void Controller_Set_Idle(uint8_t controller) { |
uint8_t buffer[2]; |
uint8_t result; |
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buffer[0] = CONTROLLER_CMD_RESET; |
I2C1_Master_Send(ctrl_data_p->connected_controllers[controller], buffer, 1); |
do { |
result = I2C1_Get_Status(); |
} while (!result); |
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Delay_MS(1); |
} |