Simplify structure of firmware directory

1 files changed, 0 insertions, 143 deletions

diff --git a/firmware/src/main.c b/firmware/src/main.c
deleted file mode 100644
index 8e39278..0000000
--- a/firmware/src/main.c
+++ /dev/null
@@ -1,143 +0,0 @@
-// vim: shiftwidth=4 tabstop=4 noexpandtab
-
-
-#include <libopencm3/stm32/rcc.h>
-#include <libopencm3/stm32/gpio.h>
-#include <libopencm3/stm32/timer.h>
-#include <libopencm3/cm3/nvic.h>
-
-
-static void clock_init(void);
-static void gpio_init(void);
-static void nvic_init(void);
-static void timer_init(void);
-
-void tim2_isr(void);
-
-
-void main(void)
-{
-	clock_init();
-	gpio_init();
-	gpio_clear(GPIOC, GPIO13);  // set onboard LED on
-	nvic_init();
-	timer_init();
-
-	while(1);  // wait forever
-}
-
-
-static void clock_init(void)
-{
-	// set sysclk to 72 MHz via external 8 MHz crystal
-	rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]);
-
-	// enable clocks for GPIO ports B and C
-	rcc_periph_clock_enable(RCC_GPIOB);
-	rcc_periph_clock_enable(RCC_GPIOC);
-	
-	// enable clock for timer 2 (blinking)
-	rcc_periph_clock_enable(RCC_TIM2);
-
-	// enable clock for timer 3 (PWM)
-	rcc_periph_clock_enable(RCC_TIM3);
-
-	// enable clock for alternate functions
-	rcc_periph_clock_enable(RCC_AFIO);  // TODO is this necessary?
-}
-
-
-static void gpio_init(void)
-{
-	// init PC13 onboard LED for blinking
-	gpio_set_mode(
-		GPIOC,
-		GPIO_MODE_OUTPUT_50_MHZ,
-		GPIO_CNF_OUTPUT_PUSHPULL,
-		GPIO13
-	);
-	
-	// setup PB0 (connected to TIM3_CH3) for PWM
-	gpio_set_mode(
-		GPIOB,
-		GPIO_MODE_OUTPUT_50_MHZ,
-		GPIO_CNF_OUTPUT_ALTFN_PUSHPULL,
-		GPIO_TIM3_CH3
-	);
-}
-
-
-static void nvic_init(void)
-{
-	// enable timer 2 interrupt and set priority
-	nvic_enable_irq(NVIC_TIM2_IRQ);
-	nvic_set_priority(NVIC_TIM2_IRQ, 1);
-}
-
-
-static void timer_init(void)
-{
-	// setup timer 2 for blinking
-	timer_set_counter(TIM2, 1);
-	timer_set_prescaler(TIM2, 1440);
-	timer_set_period(TIM2, 50);
-
-	// enable timer / counter 2 and the corresponding interrupt for blinking
-	timer_enable_irq(TIM2, TIM_DIER_UIE);
-	timer_enable_counter(TIM2);
-
-	/* 
-		enable timer / counter 3
-	*/
-
-	/* Clock division and mode */
-	TIM3_CR1 = TIM_CR1_CKD_CK_INT | TIM_CR1_CMS_EDGE;
-	/* Period */
-	TIM3_ARR = 65535;
-	/* Prescaler */
-	TIM3_PSC = 0;
-	TIM3_EGR = TIM_EGR_UG;
-
-	/* ---- */
-	/* Output compare 3 mode and preload */
-	TIM3_CCMR2 |= TIM_CCMR2_OC3M_PWM1 | TIM_CCMR2_OC3PE;
-
-	/* Polarity and state */
-	TIM3_CCER |= TIM_CCER_CC3P | TIM_CCER_CC3E;
-	//TIM3_CCER |= TIM_CCER_CC3E;
-
-	/* Capture compare value */
-	TIM3_CCR3 = 30000;
-
-	/* ---- */
-	/* ARR reload enable */
-	TIM3_CR1 |= TIM_CR1_ARPE;
-
-	/* Counter enable */
-	TIM3_CR1 |= TIM_CR1_CEN;
-}
-
-
-void tim2_isr(void)
-{
-	// PWM handling
-	static uint32_t pwm_value;
-	if (pwm_value == 0) {
-		pwm_value = 65535;
-	}
-	else {
-		pwm_value -= 20;
-	}
-	TIM3_CCR3 = pwm_value;
-
-	// toggle blink LED
-	static uint32_t counter;
-	counter += 1;
-	if (counter > 500) {
-		gpio_toggle(GPIOC, GPIO13);
-		counter = 0;
-	}
-
-	// clear interrrupt flag
-	TIM_SR(TIM2) &= ~TIM_SR_UIF;
-}