void init_pins() {
MCF_GPIO_PANPAR = MCF_GPIO_PANPAR_PANPAR0;
MCF_GPIO_DDRQS = 0;
MCF_GPIO_PQSPAR = MCF_GPIO_PQSPAR_PQSPAR6(0x1) |
MCF_GPIO_PQSPAR_PQSPAR5(0x1) |
MCF_GPIO_PQSPAR_PQSPAR4(0x1) |
MCF_GPIO_PQSPAR_PQSPAR3(0x1) |
MCF_GPIO_PQSPAR_PQSPAR2(0x1) |
MCF_GPIO_PQSPAR_PQSPAR1(0x1) |
MCF_GPIO_PQSPAR_PQSPAR0(0x1);
}
/*****************************************************************************
* @name GPIO_Init
*
* @brief: Initialization of the GPIO.
*
* @param : None
*
* @return : None
*****************************************************************************
*
*
****************************************************************************/
void GPIO_Init(void)
{
/***************************************************************************
* GPIO Init for LED
*
****************************************************************************/
/* Configure LED io pins to be outputs.
* M52221DEMO: LED to port mapping
* LED1 LED2 LED3 LED4
* | | | |
* ^ ^ ^ ^
* PTC0 PTC1 PTC2 PTC3
*/
MCF_GPIO_DDRTC = (MCF_GPIO_DDRTC_DDRTC0 |
MCF_GPIO_DDRTC_DDRTC1 |
MCF_GPIO_DDRTC_DDRTC2 |
MCF_GPIO_DDRTC_DDRTC3);
/* Assign PORTC[0-3] as GPIO */
MCF_GPIO_PTCPAR = MCF_GPIO_PTCPAR_PTCPAR0(MCF_GPIO_PTCPAR_DTIN0_GPIO) |
MCF_GPIO_PTCPAR_PTCPAR1(MCF_GPIO_PTCPAR_DTIN1_GPIO) |
MCF_GPIO_PTCPAR_PTCPAR2(MCF_GPIO_PTCPAR_DTIN2_GPIO) |
MCF_GPIO_PTCPAR_PTCPAR3(MCF_GPIO_PTCPAR_DTIN3_GPIO);
/***************************************************************************
* GPIO Init for USB
*
****************************************************************************/
/* setup gpio state, func and dirrections */
MCF_GPIO_PUAPAR &= 0x3f;
MCF_GPIO_PORTUA |= MCF_GPIO_PORTUA_PORTUA3; /* turn Vbus off */
MCF_GPIO_DDRUA |= MCF_GPIO_DDRUA_DDRUA3; /* CTS0 as output */
MCF_GPIO_PUAPAR &= 0xcf;
MCF_GPIO_DDRUA &= ~MCF_GPIO_DDRUA_DDRUA2; /* RTS0 as input */
MCF_GPIO_PORTUA &= ~MCF_GPIO_PORTUA_PORTUA3; /* turn Vbus on */
MCF_GPIO_PQSPAR |= MCF_GPIO_PQSPAR_PQSPAR5(3) | MCF_GPIO_PQSPAR_PQSPAR6(3);
/***************************************************************************
* GPIO Init for KBI
*
****************************************************************************/
/* Configure switch buttons */
/* M52221DEMO: SW1 & SW2 connected to PNQ[1] & PNQ[7] */
/* Pin assignement registers: IRQ */
/* Assure that PDDPAR[5-7] are configured to GPIO regardless of the reset state */
MCF_GPIO_PNQPAR &= ~(MCF_GPIO_PNQPAR_PNQPAR1(3) | MCF_GPIO_PNQPAR_PNQPAR7(3));
MCF_GPIO_PNQPAR |= (MCF_GPIO_PNQPAR_IRQ1_IRQ1 | MCF_GPIO_PNQPAR_IRQ7_IRQ7);
/* Configure IRQ[1] & IRQ[7] as input */
MCF_EPORT_EPDDR &= ~(MCF_EPORT_EPDDR_EPDD1 | MCF_EPORT_EPDDR_EPDD7);
/* Configure IRQ1 & IRQ7 as falling-edge sense */
MCF_EPORT_EPPAR = MCF_EPORT_EPPAR_EPPA1_FALLING | MCF_EPORT_EPPAR_EPPA7_FALLING;
/* Enable Interrupt for IRQ1 & IRQ7 */
MCF_EPORT_EPIER = MCF_EPORT_EPIER_EPIE1 | MCF_EPORT_EPIER_EPIE7;
/***************************************************************************
* GPIO Init for QSPI
*
****************************************************************************/
/* Configure the pins for QSPI for specialized purpose */
/* QSPI_CLK, QSPI_DOUT, QSPI_DIN, QSPI_CS0 */
MCF_GPIO_PQSPAR &= ~(MCF_GPIO_PQSPAR_PQSPAR0(3) |
MCF_GPIO_PQSPAR_PQSPAR1(3) |
MCF_GPIO_PQSPAR_PQSPAR2(3) |
MCF_GPIO_PQSPAR_PQSPAR3(3));
MCF_GPIO_PQSPAR |= (MCF_GPIO_PQSPAR_QSPI_DOUT_DOUT |
MCF_GPIO_PQSPAR_QSPI_DIN_DIN |
MCF_GPIO_PQSPAR_QSPI_CLK_CLK |
MCF_GPIO_PQSPAR_QSPI_CS0_CS0);
}
