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MarlinFirmware/Marlin/src/HAL/HAL_LPC1768/arduino.cpp

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2017-06-17 21:19:42 +00:00
/**
* Marlin 3D Printer Firmware
* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef TARGET_LPC1768
#include <lpc17xx_pinsel.h>
#include "HAL.h"
// Interrupts
void cli(void) { __disable_irq(); } // Disable
void sei(void) { __enable_irq(); } // Enable
// Program Memory
void serialprintPGM(const char * str){
usb_serial.print(str);
}
// Time functions
void _delay_ms(int delay_ms) {
delay (delay_ms);
}
uint32_t millis() {
return _millis;
}
//todo: recheck all of this
void delayMicroseconds(uint32_t us) {
if (us < 2) return; // function jump, compare, return about 1us
us--;
static const int nop_factor = (SystemCoreClock / 10000000); // measured accurate at 10us
static volatile int loops = 0;
if (us < 20) { // burn cycles
loops = us * nop_factor;
while (loops > 0) --loops;
}
else { // poll systick
int32_t start = SysTick->VAL;
int32_t load = SysTick->LOAD;
int32_t end = start - (load / 1000) * us;
if (end >> 31)
while (!(SysTick->VAL > start && SysTick->VAL < (load + end))) __NOP();
else
while (SysTick->VAL > end) __NOP();
}
}
extern "C" void delay(int msec) {
volatile int32_t end = _millis + msec;
while (_millis < end) __WFE();
}
// IO functions
// As defined by Arduino INPUT(0x0), OUPUT(0x1), INPUT_PULLUP(0x2)
void pinMode(int pin, int mode) {
if (!WITHIN(pin, 0, NUM_DIGITAL_PINS - 1) || pin_map[pin].port == 0xFF)
return;
PINSEL_CFG_Type config = { pin_map[pin].port,
pin_map[pin].pin,
PINSEL_FUNC_0,
PINSEL_PINMODE_TRISTATE,
PINSEL_PINMODE_NORMAL };
switch(mode) {
case INPUT:
LPC_GPIO(pin_map[pin].port)->FIODIR &= ~LPC_PIN(pin_map[pin].pin);
PINSEL_ConfigPin(&config);
break;
case OUTPUT:
LPC_GPIO(pin_map[pin].port)->FIODIR |= LPC_PIN(pin_map[pin].pin);
PINSEL_ConfigPin(&config);
break;
case INPUT_PULLUP:
LPC_GPIO(pin_map[pin].port)->FIODIR &= ~LPC_PIN(pin_map[pin].pin);
config.Pinmode = PINSEL_PINMODE_PULLUP;
PINSEL_ConfigPin(&config);
break;
default:
break;
}
}
void digitalWrite(int pin, int pin_status) {
if (!WITHIN(pin, 0, NUM_DIGITAL_PINS - 1) || pin_map[pin].port == 0xFF)
return;
if (pin_status)
LPC_GPIO(pin_map[pin].port)->FIOSET = LPC_PIN(pin_map[pin].pin);
else
LPC_GPIO(pin_map[pin].port)->FIOCLR = LPC_PIN(pin_map[pin].pin);
}
bool digitalRead(int pin) {
if (!WITHIN(pin, 0, NUM_DIGITAL_PINS - 1) || pin_map[pin].port == 0xFF) {
return false;
}
return LPC_GPIO(pin_map[pin].port)->FIOPIN & LPC_PIN(pin_map[pin].pin) ? 1 : 0;
}
void analogWrite(int pin, int pin_status) { //todo: Hardware PWM
/*
if (pin == P2_4) {
LPC_PWM1->MR5 = pin_status; // set value
LPC_PWM1->LER = _BV(5); // set latch
}
else if (pin == P2_5) {
LPC_PWM1->MR6 = pin_status;
LPC_PWM1->LER = _BV(6);
}
*/
}
extern bool HAL_adc_finished();
uint16_t analogRead(int adc_pin) {
HAL_adc_start_conversion(adc_pin);
while (!HAL_adc_finished()); // Wait for conversion to finish
return HAL_adc_get_result();
}
// **************************
// Persistent Config Storage
// **************************
void eeprom_write_byte(unsigned char *pos, unsigned char value) {
}
unsigned char eeprom_read_byte(uint8_t * pos) { return '\0'; }
void eeprom_read_block (void *__dst, const void *__src, size_t __n) { }
void eeprom_update_block (const void *__src, void *__dst, size_t __n) { }
/***/
char *dtostrf (double __val, signed char __width, unsigned char __prec, char *__s) {
char format_string[20];
snprintf(format_string, 20, "%%%d.%df", __width, __prec);
sprintf(__s, format_string, __val);
return __s;
}
int32_t random(int32_t max) {
return rand() % max;
}
int32_t random(int32_t min, int32_t max) {
return min + rand() % (max - min);
}
void randomSeed(uint32_t value) {
srand(value);
}
#endif // TARGET_LPC1768