/*
* Free the hub CRB "crbnum" which encountered an error.
* Assumption is, error handling was successfully done,
* and we now want to return the CRB back to Hub for normal usage.
*
* In order to free the CRB, all that's needed is to de-allocate it
*
* Assumption:
* No other processor is mucking around with the hub control register.
* So, upper layer has to single thread this.
*/
void
hubiio_crb_free(hubinfo_t hinfo, int crbnum)
{
ii_icrb0_b_u_t icrbb;
/*
* The hardware does NOT clear the mark bit, so it must get cleared
* here to be sure the error is not processed twice.
*/
icrbb.ii_icrb0_b_regval = REMOTE_HUB_L(hinfo->h_nasid, IIO_ICRB_B(crbnum));
icrbb.b_mark = 0;
REMOTE_HUB_S(hinfo->h_nasid, IIO_ICRB_B(crbnum), icrbb.ii_icrb0_b_regval);
/*
* Deallocate the register.
*/
REMOTE_HUB_S(hinfo->h_nasid, IIO_ICDR, (IIO_ICDR_PND | crbnum));
/*
* Wait till hub indicates it's done.
*/
while (REMOTE_HUB_L(hinfo->h_nasid, IIO_ICDR) & IIO_ICDR_PND)
us_delay(1);
}
void en_pulse(void){
EN_3 = 0x08;
us_delay(20);
EN_3 = 0x00;
}
void lcd_init(void){
int delay;
SYSCTL_RCGC2_R |= 0x03;
delay = 0;
GPIO_PORTB_LOCK_R = 0x4C4F434B;
GPIO_PORTB_CR_R |= 0x3C;
GPIO_PORTB_AMSEL_R &= ~0x3C;
GPIO_PORTB_AFSEL_R &= ~0x3C;
GPIO_PORTB_PCTL_R &= ~0xFFFF00;
GPIO_PORTB_DIR_R |= 0x3C;
GPIO_PORTB_DEN_R |= 0x3C;
GPIO_PORTA_LOCK_R = 0x4C4F434B;
GPIO_PORTA_CR_R |= 0x0C;
GPIO_PORTA_AMSEL_R &= ~0x0C;
GPIO_PORTA_AFSEL_R &= ~0x0C;
GPIO_PORTA_PCTL_R &= ~0xFF00;
GPIO_PORTA_DIR_R |= 0x0C;
GPIO_PORTA_DEN_R |= 0x0C;
ms_delay(15);
RS_2 = 0;
EN_3 = 0;
GPIO_PORTB_DATA_R = 0x0C;
en_pulse();
ms_delay(5);
GPIO_PORTB_DATA_R =0x0C;
en_pulse();
us_delay(100);
//3
GPIO_PORTB_DATA_R = 0x0C;
en_pulse();
ms_delay(100);
GPIO_PORTB_DATA_R = 0x8;
en_pulse();
ms_delay(100);
lcd_write_com(0x28);//Function Set
lcd_write_com(0x0F);//Display on/off
lcd_write_com(0x06);//Entry mode: Incremental
lcd_write_com(0x01);
//lcd_write_char(0x48);
//lcd_write_char(0x48);
}
void
ms_delay(uint16_t ms)
{
while (ms > 0) {
wdt_reset();
us_delay(1000); // XXX approximate
ms--;
}
wdt_reset();
}
