160 lines
4.5 KiB
C
160 lines
4.5 KiB
C
/*
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* Copyright (c) 2013, Freescale Semiconductor, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "fsl_device_registers.h"
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#include "milliseconds_delay.h"
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#define LED0_OFFSET 5
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#define LED1_OFFSET 16
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#define LED2_OFFSET 17
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#define DELAY_1MS (1000)
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static void init_hardware(void)
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{
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SIM->SCGC5 |= (SIM_SCGC5_PORTA_MASK | SIM_SCGC5_PORTB_MASK | SIM_SCGC5_PORTC_MASK | SIM_SCGC5_PORTD_MASK |
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SIM_SCGC5_PORTE_MASK);
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SIM->SOPT2 |= SIM_SOPT2_PLLFLLSEL_MASK; // set PLLFLLSEL to select the PLL for this clock source
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#if defined(TOWER)
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PORTA->PCR[5] = PORT_PCR_MUX(1);
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PORTA->PCR[16] = PORT_PCR_MUX(1);
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PORTA->PCR[17] = PORT_PCR_MUX(1);
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FPTA->PDDR |= (1 << LED0_OFFSET) | (1 << LED1_OFFSET) | (1 << LED2_OFFSET);
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#elif defined(FREEDOM)
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PORTB->PCR[18] = PORT_PCR_MUX(1); // Set Pin B18 to GPIO function
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PORTB->PCR[19] = PORT_PCR_MUX(1); // Set Pin B19 to GPIO function
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PORTD->PCR[1] = PORT_PCR_MUX(1); // Set Pin D1 to GPIO function
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FPTB->PDDR |= (1 << 18); // Red LED, Negative Logic (0=on, 1=off)
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FPTB->PDDR |= (1 << 19); // Green LED, Negative Logic (0=on, 1=off)
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FPTD->PDDR |= (1 << 1); // Blue LED, Negative Logic (0=on, 1=off)
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#endif // FREEDOM
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}
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#define LED0 1
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#define LED1 2
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#define LED2 4
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#if defined(TOWER)
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static void led_toggle(uint32_t leds)
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{
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if (leds & LED0)
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{
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FPTA->PTOR |= (1 << LED0_OFFSET);
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}
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if (leds & LED1)
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{
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FPTA->PTOR |= (1 << LED1_OFFSET);
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}
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if (leds & LED2)
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{
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FPTA->PTOR |= (1 << LED2_OFFSET);
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}
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}
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#elif defined(FREEDOM)
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// RGB-LED Control: 1=on, 0=off, for each of the 3 colors
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void RGB(int32_t Red, int32_t Green, int32_t Blue)
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{
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if (Red == 1)
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FPTB->PCOR |= (1 << 18);
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else
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FPTB->PSOR |= (1 << 18);
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if (Green == 1)
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FPTB->PCOR |= (1 << 19);
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else
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FPTB->PSOR |= (1 << 19);
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if (Blue == 1)
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FPTD->PCOR |= (1 << 1);
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else
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FPTD->PSOR |= (1 << 1);
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}
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#endif // FREEDOM
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void delay(void)
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{
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volatile uint32_t delayTicks = 2000000;
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while (delayTicks--)
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{
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__ASM("nop");
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}
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}
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int main(void)
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{
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init_hardware();
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// Note: for ROM development, use this version of delay function,
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// Which is in order to test if the VTCOR is correct.
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milliseconds_delay_init();
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#if defined(TOWER)
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uint32_t leds = LED0;
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while (1)
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{
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led_toggle(leds);
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milliseconds_delay(DELAY_1MS);
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led_toggle(leds);
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leds <<= 1;
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if (leds > LED2)
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{
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leds = LED0;
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}
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}
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#elif defined(FREEDOM)
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RGB(0, 0, 0); // Start with all LEDs off
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while (1)
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{
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RGB(1, 0, 0);
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milliseconds_delay(DELAY_1MS);
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RGB(0, 1, 0);
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milliseconds_delay(DELAY_1MS);
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RGB(0, 0, 1);
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milliseconds_delay(DELAY_1MS);
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}
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#endif // FREEDOM
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}
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