From f06fcac502619bc7f6155aa75947dc4340efccd5 Mon Sep 17 00:00:00 2001 From: bnewbold Date: Sat, 12 Jun 2010 22:54:11 -0400 Subject: good quality vga leaf logo; usb+systick disabled refactored timers and added interrupt behavior. see notes and comments... also includes a crude vga hack that doesn't use timers. --- examples/test-timers.cpp | 174 +++++++++++++++++++++++++++++++ examples/vga.cpp | 262 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 436 insertions(+) create mode 100644 examples/test-timers.cpp create mode 100644 examples/vga.cpp (limited to 'examples') diff --git a/examples/test-timers.cpp b/examples/test-timers.cpp new file mode 100644 index 0000000..c3e3cb9 --- /dev/null +++ b/examples/test-timers.cpp @@ -0,0 +1,174 @@ +// Sample main.cpp file. Blinks an LED, sends a message out USART2 +// and turns on PWM on pin 2 + +#include "wirish.h" +#include "timers.h" + +#define LED_PIN 13 +#define PWM_PIN 2 + +void handler1(void); +void handler2(void); +void handler3(void); +void handler4(void); + +void setup_test_timer(void); + +int toggle = 0; +int timer = 1; +int state = 3; +int last_but = 0; + +int count1 = 0; +int count2 = 0; +int count3 = 0; +int count4 = 0; +uint16 rate1 = 1000; +uint16 rate2 = 2000; +uint16 rate3 = 3000; +uint16 rate4 = 4000; +uint16 val1 = 10000; +uint16 val2 = 10000; +uint16 val3 = 10000; +uint16 val4 = 10000; + +void setup() +{ + /* Set up the LED to blink */ + pinMode(LED_PIN, OUTPUT); + + pinMode(38, INPUT); + + /* Send a message out USART2 */ + //SerialUSB.begin(9600); + SerialUSB.println("Begining timer test..."); + + /* Send a message out the usb virtual serial port */ + //SerialUSB.println("Hello!"); + + timer = 1; + setup_test_timer(); + +} + + +void loop() { + toggle ^= 1; + digitalWrite(LED_PIN, toggle); + delay(800); + + + if(digitalRead(38) && !last_but) { + state++; + switch(state){ + case 1: + SerialUSB.println("Testing Timer1 ---------------------------"); + timer = 1; + setup_test_timer(); + break; + case 2: + SerialUSB.println("Testing Timer2 ---------------------------"); + timer_set_mode(timer,1,TIMER_DISABLED); + timer_set_mode(timer,2,TIMER_DISABLED); + timer_set_mode(timer,3,TIMER_DISABLED); + timer_set_mode(timer,4,TIMER_DISABLED); + timer_set_count(1,0); + timer_set_count(2,0); + timer_set_count(3,0); + timer_set_count(4,0); + timer = 2; + setup_test_timer(); + break; + case 3: + SerialUSB.println("Testing Timer3 ---------------------------"); + timer_set_mode(timer,1,TIMER_DISABLED); + timer_set_mode(timer,2,TIMER_DISABLED); + timer_set_mode(timer,3,TIMER_DISABLED); + timer_set_mode(timer,4,TIMER_DISABLED); + timer = 3; + setup_test_timer(); + break; + case 4: + SerialUSB.println("Testing Timer4 ---------------------------"); + timer_set_mode(timer,1,TIMER_DISABLED); + timer_set_mode(timer,2,TIMER_DISABLED); + timer_set_mode(timer,3,TIMER_DISABLED); + timer_set_mode(timer,4,TIMER_DISABLED); + timer = 4; + setup_test_timer(); + break; + default: + state = 0; + timer_set_mode(timer,1,TIMER_DISABLED); + timer_set_mode(timer,2,TIMER_DISABLED); + timer_set_mode(timer,3,TIMER_DISABLED); + timer_set_mode(timer,4,TIMER_DISABLED); + timer = 0; + SerialUSB.println("Restarting -------------------------------"); + } + } + + SerialUSB.print("Doing ------------------ "); SerialUSB.println(timer,DEC); + if(timer!=0) { SerialUSB.print("CNT: "); SerialUSB.println(timer_get_count(timer),DEC); } + SerialUSB.print("Count1 : "); SerialUSB.println(count1,DEC); + SerialUSB.print("Count2 : "); SerialUSB.println(count2,DEC); + SerialUSB.print("Count3 : "); SerialUSB.println(count3,DEC); + SerialUSB.print("Count4 : "); SerialUSB.println(count4,DEC); + SerialUSB.println(); + /* + SerialUSB.print("Status : "); SerialUSB.println(get_sr(),HEX); + */ + last_but = digitalRead(38); +} + +void setup_test_timer(void) { + timer_set_prescaler(timer,10000); + timer_set_mode(timer,1,TIMER_OUTPUTCOMPARE); + timer_set_mode(timer,2,TIMER_OUTPUTCOMPARE); + timer_set_mode(timer,3,TIMER_OUTPUTCOMPARE); + timer_set_mode(timer,4,TIMER_OUTPUTCOMPARE); + val1 = val2 = val3 = val4 = 10000; + timer_set_compare_value(timer,1,val1); + timer_set_compare_value(timer,2,val2); + timer_set_compare_value(timer,3,val3); + timer_set_compare_value(timer,4,val4); + timer_attach_interrupt(timer,1,handler1); + timer_attach_interrupt(timer,2,handler2); + timer_attach_interrupt(timer,3,handler3); + timer_attach_interrupt(timer,4,handler4); + count1 = count2 = count3 = count4 = 0; +} + +void handler1(void) { + val1 += rate1; + timer_set_compare_value(timer,1,val1); + count1++; + //SerialUSB.print("CC3 Inter: "); SerialUSB.print(get_sr(),HEX); + // SerialUSB.print(", "); SerialUSB.println(get_sr_buff(),HEX); +} +void handler2(void) { + val2 += rate2; + timer_set_compare_value(timer,2,val2); + count2++; +} +void handler3(void) { + val3 += rate3; + timer_set_compare_value(timer,3,val3); + count3++; +} +void handler4(void) { + val4 += rate4; + timer_set_compare_value(timer,4,val4); + count4++; +} + + +int main(void) { + init(); + setup(); + + while (1) { + loop(); + } + return 0; +} diff --git a/examples/vga.cpp b/examples/vga.cpp new file mode 100644 index 0000000..c2e61ae --- /dev/null +++ b/examples/vga.cpp @@ -0,0 +1,262 @@ + +#include "wirish.h" + +/* +D5 PB6 - TIM4_CH1 I2C1_SCL - - Y +D6 PA8 - TIM1_CH1 - USART1_CK - Y +D7 PA9 - TIM1_CH2 - USART1_TX - Y +D8 PA10 - TIM1_CH3 - USART1_RX - Y +D9 PB7 - TIM4_CH2 I2C1_SDA - - Y +*/ + +//gpio_write_bit(GPIOB_BASE, 6, 1); // VGA_R +//gpio_write_bit(GPIOB_BASE, 6, 0); + +//(GPIOA_BASE)->BSRR = BIT(8); +//asm volatile("nop"); +//(GPIOA_BASE)->BRR = BIT(8); +/* + gpio_write_bit(GPIOB_BASE, 6, 1); // VGA_R + gpio_write_bit(GPIOB_BASE, 6, 0); + gpio_write_bit(GPIOA_BASE, 8, 1); // VGA_G + gpio_write_bit(GPIOA_BASE, 8, 0); + gpio_write_bit(GPIOA_BASE, 9, 1); // VGA_B + gpio_write_bit(GPIOA_BASE, 9, 0); + gpio_write_bit(GPIOA_BASE, 10, 1); // VGA_V + gpio_write_bit(GPIOA_BASE, 10, 0); + gpio_write_bit(GPIOB_BASE, 7, 1); // VGA_H + gpio_write_bit(GPIOB_BASE, 7, 0); +*/ + +#define LED_PIN 13 +#define VGA_R 5 // B6 +#define VGA_G 6 // A8 +#define VGA_B 7 // A9 +#define VGA_V 11 // A6 +#define VGA_H 12 // A7 +#define VGA_R_HIGH (GPIOB_BASE)->BSRR = BIT(6) +#define VGA_R_LOW (GPIOB_BASE)->BRR = BIT(6) +#define VGA_G_HIGH (GPIOA_BASE)->BSRR = BIT(8) +#define VGA_G_LOW (GPIOA_BASE)->BRR = BIT(8) +#define VGA_B_HIGH (GPIOA_BASE)->BSRR = BIT(9) +#define VGA_B_LOW (GPIOA_BASE)->BRR = BIT(9) +#define VGA_V_HIGH (GPIOA_BASE)->BSRR = BIT(6) +#define VGA_V_LOW (GPIOA_BASE)->BRR = BIT(6) +#define VGA_H_HIGH (GPIOA_BASE)->BSRR = BIT(7) +#define VGA_H_LOW (GPIOA_BASE)->BRR = BIT(7) + +void isr_porch(void); +void isr_start(void); +void isr_stop(void); +void isr_update(void); + +void setup() +{ + pinMode(LED_PIN, OUTPUT); + digitalWrite(LED_PIN, 1); + pinMode(VGA_R, OUTPUT); + pinMode(VGA_G, OUTPUT); + pinMode(VGA_B, OUTPUT); + pinMode(VGA_V, OUTPUT); + pinMode(VGA_H, OUTPUT); + + /* Send a message out USART2 */ + Serial2.begin(9600); + Serial2.println("Video time..."); + + + digitalWrite(VGA_R, 0); + digitalWrite(VGA_G, 0); + digitalWrite(VGA_B, 0); + digitalWrite(VGA_H,1); + digitalWrite(VGA_V,1); + + timer_set_prescaler(4,0); + timer_set_mode(4, 1, TIMER_OUTPUTCOMPARE); + timer_set_mode(4, 2, TIMER_OUTPUTCOMPARE); + timer_set_mode(4, 3, TIMER_OUTPUTCOMPARE); + timer_set_mode(4, 4, TIMER_OUTPUTCOMPARE); + timer_set_reload(4, 2287); + timer_set_compare_value(4,1,200); + timer_set_compare_value(4,2,300); + timer_set_compare_value(4,3,2170); // 2219 max... + timer_set_compare_value(4,4,1); + timer_attach_interrupt(4,1,isr_porch); + timer_attach_interrupt(4,2,isr_start); + timer_attach_interrupt(4,3,isr_stop); + timer_attach_interrupt(4,4,isr_update); + + timer_set_count(4,0); +} + +int toggle = 0; +uint16 x = 0; +uint16 y = 0; +uint8 v_active = 1; +GPIO_Port *portb = GPIOB_BASE; + +void isr_porch(void) { + VGA_H_HIGH; + y++; + if(y>=523) { + y=1; + v_active = 1; + return; + } + if(y>=492) { + VGA_V_HIGH; + return; + } + if(y>=490) { + VGA_V_LOW; + return; + } + if(y>=479) { // 479 + v_active = 0; + return; + } +} + +uint8 logo[18][16] = { + {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,}, + {0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,}, + {0,0,0,0,0,1,0,0,0,1,0,0,0,0,0,0,}, + {0,0,0,0,1,0,0,1,0,0,1,0,0,0,0,0,}, + {0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,}, + {0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,}, + {0,0,1,0,0,1,0,1,0,1,0,0,1,0,0,0,}, + {0,1,0,0,0,0,1,1,1,0,0,0,0,1,0,0,}, + {0,1,0,1,0,0,0,1,0,0,0,1,0,1,0,0,}, + {1,0,0,0,1,0,0,1,0,0,1,0,0,0,1,0,}, + {1,0,0,0,0,1,0,1,0,1,0,0,0,0,1,0,}, + {1,0,0,0,0,0,1,1,1,0,0,0,0,0,1,0,}, + {0,1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,}, + {0,0,1,1,0,0,0,1,0,0,0,1,1,0,0,0,}, + {0,0,0,0,1,1,1,0,1,1,1,0,0,0,0,0,}, + {0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,}, + {0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,}, + {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,}, }; + +void isr_start(void) { + if(!v_active) { return; } + VGA_R_HIGH; + //delayMicroseconds(2); + //gpio_write_bit(GPIOA_BASE, 8, 1); // VGA_G + for(x=0; x<32; x++) { + if(logo[y/28][x/2]) { + VGA_G_HIGH; + VGA_B_HIGH; + } else { + VGA_G_LOW; + VGA_B_LOW; + } + } + +} +void isr_stop(void) { + if(!v_active) { return; } + VGA_R_LOW; + VGA_G_LOW; + VGA_B_LOW; +} +void isr_update(void) { + VGA_H_LOW; +} + +void loop() { + /* + toggle ^= 1; + digitalWrite(LED_PIN, toggle); + delay(100); + Serial2.println("HIHIHI!"); + */ + //for(y=0; y<480; y++) { + /* + for(y=0; y<160; y++) { + VGA_R_LOW; + VGA_H_LOW; + delayMicroseconds(3); + VGA_H_HIGH; + VGA_R_HIGH; + delayMicroseconds(8); + VGA_G_HIGH; + delayMicroseconds(10); + VGA_B_HIGH; + delayMicroseconds(10); + VGA_R_LOW; + VGA_B_LOW; + VGA_G_LOW; + //VGA_G_HIGH; + } + for(y=0; y<160; y++) { + VGA_R_LOW; + VGA_H_LOW; + delayMicroseconds(3); + VGA_H_HIGH; + VGA_G_HIGH; + delayMicroseconds(8); + VGA_R_HIGH; + delayMicroseconds(10); + VGA_B_HIGH; + delayMicroseconds(10); + VGA_R_LOW; + VGA_B_LOW; + VGA_G_LOW; + //VGA_G_HIGH; + } + for(y=0; y<160; y++) { + VGA_R_LOW; + VGA_H_LOW; + delayMicroseconds(3); + VGA_H_HIGH; + VGA_B_HIGH; + delayMicroseconds(8); + VGA_G_HIGH; + delayMicroseconds(10); + VGA_R_HIGH; + delayMicroseconds(10); + VGA_R_LOW; + VGA_B_LOW; + VGA_G_LOW; + //VGA_G_HIGH; + } + for(y=0; y<11; y++) { + VGA_R_LOW; + VGA_H_LOW; + delayMicroseconds(3); + VGA_R_LOW; + VGA_H_HIGH; + delayMicroseconds(28); + } + VGA_V_LOW; + for(y=0; y<2; y++) { + VGA_R_LOW; + VGA_H_LOW; + delayMicroseconds(3); + VGA_R_LOW; + VGA_H_HIGH; + delayMicroseconds(28); + } + VGA_V_HIGH; + for(y=0; y<30; y++) { + VGA_R_LOW; + VGA_H_LOW; + delayMicroseconds(3); + VGA_R_LOW; + VGA_H_HIGH; + delayMicroseconds(28); + } + */ + +} + + +int main(void) { + init(); + setup(); + + while (1) { + loop(); + } + return 0; +} -- cgit v1.2.3