0,0 → 1,272 |
// <editor-fold defaultstate="collapsed" desc="Configuration Bits"> |
// PIC16F1825 Configuration Bit Settings |
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// CONFIG1 |
#pragma config FOSC = INTOSC // Oscillator Selection (INTOSC oscillator: I/O function on CLKIN pin) |
#pragma config WDTE = OFF // Watchdog Timer Enable (WDT software controlled) |
#pragma config PWRTE = OFF // Power-up Timer Enable (PWRT disabled) |
#pragma config MCLRE = ON // MCLR Pin Function Select (MCLR/VPP pin function is digital input) |
#pragma config CP = OFF // Flash Program Memory Code Protection (Program memory code protection is disabled) |
#pragma config CPD = OFF // Data Memory Code Protection (Data memory code protection is disabled) |
#pragma config BOREN = ON // Brown-out Reset Enable (Brown-out Reset enabled) |
#pragma config CLKOUTEN = OFF // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin) |
#pragma config IESO = ON // Internal/External Switchover (Internal/External Switchover mode is enabled) |
#pragma config FCMEN = ON // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor is enabled) |
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// CONFIG2 |
#pragma config WRT = OFF // Flash Memory Self-Write Protection (Write protection off) |
#pragma config PLLEN = ON // PLL Enable (4x PLL enabled) |
#pragma config STVREN = ON // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will cause a Reset) |
#pragma config BORV = LO // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.) |
#pragma config LVP = OFF // Low-Voltage Programming Enable (High-voltage on MCLR/VPP must be used for programming) |
// </editor-fold> |
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#include "defines.h" |
#include "INTERRUPTS.h" |
#include "IO.h" |
#include "I2C1.h" |
#include "I2C2.h" |
#include "TLC59116.h" |
#include "MCP23009.h" |
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persistent uint8_t op_state; |
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void Reset_Board(uint8_t next_state) { |
op_state = next_state; |
RESET(); |
} |
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uint8_t Get_Last_Reset(void) { |
uint8_t ret; |
if (PCONbits.nPOR == 0) { |
ret = RESET_POR; |
} else if (PCONbits.nBOR == 0) { |
ret = RESET_BOR; |
} else if (STATUSbits.nTO == 0) { |
ret = RESET_WDT; |
} else if (PCONbits.nRMCLR == 0) { |
ret = RESET_MCLR; |
} else if (PCONbits.STKOVF || PCONbits.STKUNF) { |
ret = RESET_STK; |
} else if (PCONbits.nRI == 0) { |
ret = RESET_RST; |
} else { |
ret = RESET_POR; |
} |
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PCON = 0x0F; |
STATUSbits.nPD = 1; |
STATUSbits.nTO = 1; |
return ret; |
} |
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uint8_t Read_Address(void) { |
uint8_t ret = I2C1_SLAVE_PREFIX; |
if (!I2C_ADDR_3_PORT) |
ret |= 0x08; |
if (!I2C_ADDR_2_PORT) |
ret |= 0x04; |
if (!I2C_ADDR_1_PORT) |
ret |= 0x02; |
if (!I2C_ADDR_0_PORT) |
ret |= 0x01; |
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return ret; |
} |
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BTN_STATUS btns; |
LED_VALUES leds = {0x00}; |
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int main(void) { |
uint8_t buffer[32]; |
uint8_t result, length; |
uint8_t i2c_slave_addr; |
// uint8_t op_state; |
uint8_t i; |
|
// Set internal oscillator speed to 32MHz |
OSCCONbits.SPLLEN = 1; // 4x PLL enable (overwritten by config bits) |
OSCCONbits.IRCF = 0xE; // Base frequency @ 8MHz |
OSCCONbits.SCS = 0b00; // System clock determined by config bits |
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// Initialize I/O |
IO_Init(); |
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uint8_t last_reset = Get_Last_Reset(); |
if (last_reset == RESET_POR || last_reset == RESET_BOR || |
last_reset == RESET_MCLR || last_reset == RESET_WDT || |
last_reset == RESET_STK) { |
op_state = OP_STATE_IDLE; |
} |
// if (last_reset == RESET_RST) { |
// op_state = OP_STATE_ACTIVE; |
// } |
|
i2c_slave_addr = Read_Address(); |
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// Delay a bit to allow I2C lines to stabilize |
__delay_ms(10); |
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// Initialize I2C1 in slave mode |
I2C1_DATA i2c1_data; |
I2C1_Init(&i2c1_data); |
I2C1_Configure_Slave(i2c_slave_addr); |
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// Initialize I2C2 in master mode |
I2C2_DATA i2c2_data; |
I2C2_Init(&i2c2_data); |
I2C2_Configure_Master(I2C_1MHZ); |
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// Initialize interrupts |
Interrupt_Init(); |
Interrupt_Enable(); |
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MCP23009_Init(&btns); |
MCP23009_Query(); |
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TLC59116_Init(); |
// TLC59116_Write_All(&leds); |
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if (op_state == OP_STATE_IDLE) { |
// IO_IOC_Enable(); |
Idle_Animation(); |
} else if (op_state == OP_STATE_ACTIVE) { |
while (1) { |
// Check if an I2C message was received |
result = I2C1_Get_Status(); |
if (result) { |
length = I2C1_Read_Buffer(buffer); |
if (length == 1 && buffer[0] == CMD_RESET) { |
Reset_Board(OP_STATE_IDLE); |
} else if (length == 1 && buffer[0] == CMD_ACTIVE) { |
Reset_Board(OP_STATE_ACTIVE); |
} else if (length == 17 && buffer[0] == CMD_SET_LEDS) { |
for (i = 0; i < 16; i++) { |
leds.w[i] = buffer[i + 1]; |
} |
TLC59116_Write_All(&leds); |
} |
} |
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I2C2_Master_Restart(MCP23009_ADDR, MCP23009_GPIOA, 1); |
do { |
result = I2C2_Get_Status(); |
} while (!result); |
length = I2C2_Read_Buffer(buffer); |
btns.w = buffer[0]; |
} |
} |
} |
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void Check_I2C(void) { |
uint8_t buffer[32]; |
uint8_t result, length, i; |
|
// Check if an I2C message was received |
result = I2C1_Get_Status(); |
if (result) { |
length = I2C1_Read_Buffer(buffer); |
if (length == 1 && buffer[0] == CMD_RESET) { |
Reset_Board(OP_STATE_IDLE); |
} else if (length == 1 && buffer[0] == CMD_ACTIVE) { |
Reset_Board(OP_STATE_ACTIVE); |
} else if (length == 17 && buffer[0] == CMD_SET_LEDS) { |
for (i = 0; i < 16; i++) { |
leds.w[i] = buffer[i + 1]; |
} |
TLC59116_Write_All(&leds); |
} |
} |
} |
|
void Idle_Animation(void) { |
LED_VALUES leds = {0}; |
uint8_t led_direction_bar[8] = {1,0,0,0,0,0,0,0}; |
uint8_t led_direction_dir[8] = {1,0,0,0}; |
uint8_t led_direction_ind[8] = {1,0,0,0}; |
uint8_t led_8_high_thres = 0x80; // Max brightness of the middle section |
uint8_t led_8_next_thresh = 0x40; // Threshold to start the next LED |
uint8_t led_4_high_thres = 0x80; // Max brightness of the side sections |
uint8_t led_4_next_thresh = 0x74; // Threshold to start the next LED |
uint8_t i, next_led; |
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for (i = 0; i < 16; i++) leds.w[i] = 0x00; |
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while (1) { |
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// Check to see if a new message was received |
Check_I2C(); |
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// Update the LEDs in the middle section |
for (i = 0; i < 8; i++) { |
// Change the LED brightness depending on its direction |
if (led_direction_bar[i] == 1) { |
leds.w[i]++; |
} else if (led_direction_bar[i] == 2) { |
leds.w[i]--; |
} |
|
// Change direction if peak brightness is reached |
// When the brightness reaches a middle threshold, start |
// increasing the brightness of the next LED |
if (led_direction_bar[i] == 1 && leds.w[i] == led_8_high_thres) { |
led_direction_bar[i] = 2; |
} else if (led_direction_bar[i] == 1 && leds.w[i] == led_8_next_thresh) { |
next_led = (i == 7) ? 0 : i + 1; |
led_direction_bar[next_led] = 1; |
} else if (led_direction_bar[i] == 2 && leds.w[i] == 0x00) { |
led_direction_bar[i] = 0; |
} |
} |
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// Update the LEDs in the right section |
for (i = 0; i < 4; i++) { |
// Change the LED brightness depending on its direction |
if (led_direction_dir[i] == 1) { |
leds.w[i+8]++; |
} else if (led_direction_dir[i] == 2) { |
leds.w[i+8]--; |
} |
|
// Change direction if peak brightness is reached |
// When the brightness reaches a middle threshold, start |
// increasing the brightness of the next LED |
if (led_direction_dir[i] == 1 && leds.w[i+8] == led_4_high_thres) { |
led_direction_dir[i] = 2; |
} else if (led_direction_dir[i] == 1 && leds.w[i+8] == led_4_next_thresh) { |
next_led = (i == 3) ? 0 : i + 1; |
led_direction_dir[next_led] = 1; |
} else if (led_direction_dir[i] == 2 && leds.w[i+8] == 0x00) { |
led_direction_dir[i] = 0; |
} |
} |
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// Update the LEDs in the left section |
for (i = 0; i < 4; i++) { |
// Change the LED brightness depending on its direction |
if (led_direction_ind[i] == 1) { |
leds.w[i+12]++; |
} else if (led_direction_ind[i] == 2) { |
leds.w[i+12]--; |
} |
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// Change direction if peak brightness is reached |
// When the brightness reaches a middle threshold, start |
// increasing the brightness of the next LED |
if (led_direction_ind[i] == 1 && leds.w[i+12] == led_4_high_thres) { |
led_direction_ind[i] = 2; |
} else if (led_direction_ind[i] == 1 && leds.w[i+12] == led_4_next_thresh) { |
next_led = (i == 3) ? 0 : i + 1; |
led_direction_ind[next_led] = 1; |
} else if (led_direction_ind[i] == 2 && leds.w[i+12] == 0x00) { |
led_direction_ind[i] = 0; |
} |
} |
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// Write the LED values to the controller |
TLC59116_Write_All(&leds); |
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// Delay a bit to slow down the animation |
__delay_ms(1); |
} |
} |