void systick_setup(void)
{
systick_set_reload(rcc_ahb_frequency / SYSTICK_HZ);
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
systick_counter_enable();
systick_interrupt_enable();
}
/*
* Initialise the Cortex-M3 SysTick timer
*/
void timer_init(void) {
system_millis = 0;
/*
* MCU clock (120 MHz) as source
*
* (120 MHz / 8) = 15 clock pulses
*
*/
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
STK_CVR = 0;
/*
* 1 tick = 1 ms @ 120 MHz
*
* (15 clock pulses * 1000 ms) = 15000 clock pulses
*
* Send an interrupt every (N - 1) clock pulses
*/
systick_set_reload(14999);
/* SysTick as interrupt */
systick_interrupt_enable();
systick_counter_enable();
}
void systick_init(void)
{
systick_ms = 0;
systick_set_frequency(1000, rcc_ppre2_frequency*2);
systick_interrupt_enable();
systick_counter_enable();
}
void tick_init(void)
{
uint32_t systick_reload_val;
g_ulSysTickCount = 0;
/* Disable IRQ globally */
asm volatile ("cpsid i");
/* Set processor Clock as Source Clock */
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
systick_set_reload(rcc_ahb_frequency / 1000);
systick_interrupt_enable();
/* Start counting. */
systick_counter_enable();
/* Set SysTick Priority to maximum */
nvic_set_priority(NVIC_SYSTICK_IRQ, 255);
/* Enable IRQ globally */
asm volatile ("cpsie i");
scs_dwt_cycle_counter_enabled();
}
int main(void)
{
/* Check the force bootloader pin*/
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
if(!gpio_get(GPIOA, GPIO0))
dfu_jump_app_if_valid();
dfu_protect_enable();
/* Set up clock*/
rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_168MHZ]);
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
systick_set_reload(2100000);
systick_interrupt_enable();
systick_counter_enable();
/* Handle LED */
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
gpio_clear(GPIOA, GPIO4);
gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
GPIO4);
/* Set up USB*/
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_AHB2ENR, RCC_AHB2ENR_OTGFSEN);
/* Set up USB Pins and alternate function*/
gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE,
GPIO9 | GPIO10 | GPIO11 | GPIO12);
gpio_set_af(GPIOA, GPIO_AF10, GPIO9 | GPIO10| GPIO11 | GPIO12);
dfu_init(&stm32f107_usb_driver);
dfu_main();
}
void time_init() {
systick_set_reload(0xffffff);
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB);
rollovers = 0;
systick_interrupt_enable();
systick_counter_enable();
}
void init_systick(void)
{
systick_set_frequency(HZ, 72000000);
systick_interrupt_enable();
systick_counter_enable();
}
int main(void)
{
rcc_clock_setup_in_hse_8mhz_out_72mhz();
gpio_setup();
gpio_clear(GPIOA, GPIO7); /* LED1 on */
gpio_set(GPIOA, GPIO6); /* LED2 off */
temp32 = 0;
/* 72MHz / 8 => 9000000 counts per second */
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
/* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */
/* SysTick interrupt every N clock pulses: set reload to N-1 */
systick_set_reload(8999);
systick_interrupt_enable();
/* Start counting. */
systick_counter_enable();
while (1); /* Halt. */
return 0;
}
void systick_setup(void)
{
uint32_t systick_reload_val;
g_ulSysTickCount = 0;
/* Disable IRQ globally */
__asm__("cpsid i");
/* Set processor Clock as Source Clock */
systick_set_clocksource(STK_CTRL_CLKSOURCE);
/* Get SysTick calibration value to obtain by default 1 tick = 10ms */
systick_reload_val = systick_get_calib();
/*
* Calibration seems wrong on LPC43xx(TBC) for default Freq it assume System Clock is 12MHz but it is 12*17=204MHz
* Fix the Calibration value bu multiplication by 17
*/
systick_reload_val = (systick_reload_val*17);
/* To obtain 1ms per tick just divide by 10 the 10ms base tick and set the reload */
systick_reload_val = systick_reload_val/10;
systick_set_reload(systick_reload_val);
systick_interrupt_enable();
/* Start counting. */
systick_counter_enable();
/* Set SysTick Priority to maximum */
nvic_set_priority(NVIC_SYSTICK_IRQ, 0xFF);
/* Enable IRQ globally */
__asm__("cpsie i");
}
int main(void)
{
/* Check the force bootloader pin*/
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
if(gpio_get(GPIOB, GPIO12))
dfu_jump_app_if_valid();
dfu_protect_enable();
rcc_clock_setup_in_hse_8mhz_out_72mhz();
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
systick_set_reload(900000);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, 0, GPIO8);
systick_interrupt_enable();
systick_counter_enable();
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO11);
gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_FLOAT, GPIO2 | GPIO10);
dfu_init(&stm32f103_usb_driver);
gpio_set(GPIOA, GPIO8);
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
dfu_main();
}
void time_init(void) {
system_ms = 0;
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
STK_CVR = 0;
systick_set_reload(32000000/1000 -1);
systick_counter_enable();
systick_interrupt_enable();
}
void systick_setup(void)
{
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8); // 24meg / 8 = 3Mhz
// one interrupt per ms..
systick_set_reload(3000);
systick_interrupt_enable();
systick_counter_enable();
}
/* Implementing a usleep alternative*/
void _delay_us(u32 delay_us)
{
tick_us = 0;
desired_us = delay_us;
systick_counter_enable();
while( tick_us < desired_us);// This provides the busy-wait
systick_counter_disable();// Kill the interrupt if not using it. The ISR just slows down the uC
}
void stick_init(int32_t hz)
{
ticks = 0;
systick_set_frequency(hz, rcc_ppre2_frequency*2);
systick_interrupt_enable();
systick_counter_enable();
}
void SetupSystick(void)
{
// Clock rate / 1000 = 168000 for one ms
systick_set_reload(168000);
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
systick_counter_enable();
systick_interrupt_enable();
}
int platform_init(void)
{
rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_168MHZ]);
/* Enable peripherals */
rcc_peripheral_enable_clock(&RCC_AHB2ENR, RCC_AHB2ENR_OTGFSEN);
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPBEN);
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPCEN);
/* Fix all flaoting pins*/
gpio_mode_setup(GPIOA, GPIO_MODE_INPUT, GPIO_PUPD_PULLDOWN,
0x1ff);
gpio_mode_setup(GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_PULLDOWN,
0xffe2);
gpio_mode_setup(GPIOC, GPIO_MODE_INPUT, GPIO_PUPD_PULLDOWN,
0xf3ff);
/* Set up USB Pins and alternate function*/
gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE,
GPIO9 | GPIO10| GPIO11 | GPIO12);
gpio_set_af(GPIOA, GPIO_AF10, GPIO9 | GPIO10| GPIO11 | GPIO12);
/* Set TMS/TCK/TDI to high speed*/
GPIOA_OSPEEDR &=~0xfc00;
GPIOA_OSPEEDR |= 0xa800;
gpio_mode_setup(JTAG_PORT, GPIO_MODE_OUTPUT,
GPIO_PUPD_NONE,
TMS_PIN | TCK_PIN | TDI_PIN);
gpio_mode_setup(TDO_PORT, GPIO_MODE_INPUT,
GPIO_PUPD_NONE,
TDO_PIN | TRST_PIN);
gpio_mode_setup(LED_PORT, GPIO_MODE_OUTPUT,
GPIO_PUPD_NONE,
LED_UART );
/* Setup heartbeat timer */
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
systick_set_reload(168000000/(10*8)); /* Interrupt us at 10 Hz */
SCB_SHPR(11) &= ~((15 << 4) & 0xff);
SCB_SHPR(11) |= ((14 << 4) & 0xff);
systick_interrupt_enable();
systick_counter_enable();
usbuart_init();
SCB_VTOR = 0x10000; // Relocate interrupt vector table here
cdcacm_init();
jtag_scan(NULL);
return 0;
}
void time_init() {
{ CriticalSection cs;
systick_set_reload(0xffffff);
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
rollovers = 0;
systick_interrupt_enable();
systick_counter_enable();
}
}
/*
* systick_setup(void)
*
* This function sets up the 1khz "system tick" count. The SYSTICK counter is a
* standard feature of the Cortex-M series.
*/
static void systick_setup(void)
{
/* clock rate / 1000 to get 1mS interrupt rate */
systick_set_reload(168000);
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
systick_counter_enable();
/* this done last */
systick_interrupt_enable();
}
/* Set up timer to fire freq times per second */
static void systick_setup(int freq)
{
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
/* clear counter so it starts right away */
STK_CVR = 0;
systick_set_reload(32000000 / freq);
systick_counter_enable();
systick_interrupt_enable();
}
static void systick_setup(void) {
/* 72 MHz with DIV 8 -> systick clock source of 9MHz */
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
/* Systick interrupt period 1ms -> 9MHz / 1kHz = 9000 */
systick_set_reload(9000 - 1);
systick_interrupt_enable();
systick_counter_enable();
}
/**
* initialise and start SysTick counter. This will trigger the
* sys_tick_handler() periodically once interrupts have been enabled
* by archFirstThreadRestore()
*/
static void systick_setup(void)
{
//systick_set_frequency(SYSTEM_TICKS_PER_SEC, 72000000); OLD :: MOD
systick_set_frequency(SYSTEM_TICKS_PER_SEC, 24000000);
systick_interrupt_enable();
systick_counter_enable();
}
void time_delay_ms(unsigned int delay) {
uint32_t wake = system_ms + delay;
uint32_t cnt;
do {
systick_counter_disable();
cnt = system_ms;
systick_counter_enable();
}
while (wake > cnt);
}
void clock_setup(void)
{
rcc_clock_setup_hse_3v3(&rcc_hse_8mhz_3v3[RCC_CLOCK_3V3_168MHZ]);
/* set up the SysTick function (1mS interrupts) */
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
STK_CVR = 0;
systick_set_reload(rcc_ahb_frequency / 1000);
systick_counter_enable();
systick_interrupt_enable();
}
void setup_clock(void)
{
/* Setup clock source @ 32MHz */
rcc_clock_setup_pll(&rcc_clock_config[1]);
/* Setup sysclock to trigger every 1ms */
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
systick_set_reload(3999);
systick_interrupt_enable();
systick_counter_enable();
}
/* Setup systick */
void systick_init(void)
{
/* 48MHz / 8 => 6,000,000 counts per second */
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
/* 6,000,000/6000 = 1000 overflows per second - every 1ms one interrupt */
/* SysTick interrupt every N clock pulses: set reload to N-1 */
systick_set_reload(47999);
systick_interrupt_enable();
systick_counter_enable();
}
/*
* Set up timer to fire every x milliseconds
* This is a unusual usage of systick, be very careful with the 24bit range
* of the systick counter! You can range from 1 to 2796ms with this.
*/
static void systick_setup(int xms)
{
/* div8 per ST, stays compatible with M3/M4 parts, well done ST */
systick_set_clocksource(STK_CSR_CLKSOURCE_EXT);
/* clear counter so it starts right away */
STK_CVR = 0;
systick_set_reload(rcc_ahb_frequency / 8 / 1000 * xms);
systick_counter_enable();
systick_interrupt_enable();
}
static void config_clocks(void)
{
rcc_clock_setup_in_hse_8mhz_out_24mhz();
/* Set systick timer to strike every 1ms (1kHz),
* enable its interrupt and start it. */
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
systick_set_reload(rcc_apb2_frequency / 8 / 1000 - 1);
systick_interrupt_enable();
systick_counter_enable();
}
/*
* clock_setup(void)
*
* This function sets up both the base board clock rate
* and a 1khz "system tick" count. The SYSTICK counter is
* a standard feature of the Cortex-M series.
*/
void clock_setup(void)
{
/* Base board frequency, set to 168Mhz */
rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_168MHZ]);
/* clock rate / 168000 to get 1mS interrupt rate */
systick_set_reload(168000);
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
systick_counter_enable();
/* this done last */
systick_interrupt_enable();
}
void systick_setup(void)
{
/* 72MHz / 8 => 9000000 counts per second */
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
/* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */
systick_set_reload(9000);
systick_interrupt_enable();
/* Start counting. */
systick_counter_enable();
}
static void systick_setup(void) {
/* 72MHz / 8 => 9000000 counts per second */
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
/* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */
/* SysTick interrupt every N clock pulses: set reload to N-1 */
systick_set_reload(8999);
systick_interrupt_enable();
/* Start counting */
systick_counter_enable();
}
