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Use SPI library.

This commit is contained in:
Randall Bohn (Huckle) 2012-02-18 10:11:05 -07:00 committed by Peter Van Hoyweghen
parent 8dfe833e49
commit aeaed27e13
1 changed files with 16 additions and 36 deletions
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52
build/shared/examples/11.ArduinoISP/ArduinoISP/ArduinoISP.ino
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@ -43,6 +43,7 @@
// - The SPI functions herein were developed for the AVR910_ARD programmer
// - More information at http://code.google.com/p/mega-isp
#include "SPI.h"
#include "pins_arduino.h"
#define RESET SS
@ -67,12 +68,17 @@ void pulse(int pin, int times);
void setup() {
Serial.begin(9600);
SPI.setDataMode(0);
SPI.setBitOrder(MSBFIRST);
// Clock Div can be 2,4,8,16,32,64, or 128
SPI.setClockDivider(SPI_CLOCK_DIV128);
pinMode(LED_PMODE, OUTPUT);
pulse(LED_PMODE, 2);
pinMode(LED_ERR, OUTPUT);
pulse(LED_ERR, 2);
pinMode(LED_HB, OUTPUT);
pulse(LED_HB, 2);
}
int error = 0;
@ -96,7 +102,7 @@ typedef struct param {
uint16_t pagesize;
uint16_t eepromsize;
uint32_t flashsize;
}
}
parameter;
parameter param;
@ -164,33 +170,13 @@ void prog_lamp(int state) {
}
}
void spi_init() {
uint8_t x;
SPCR = 0x53;
x = SPSR;
x = SPDR;
}
void spi_wait() {
do {
} while (!(SPSR & (1 << SPIF)));
}
uint8_t spi_send(uint8_t b) {
uint8_t reply;
SPDR = b;
spi_wait();
reply = SPDR;
return reply;
}
uint8_t spi_transaction(uint8_t a, uint8_t b, uint8_t c, uint8_t d) {
uint8_t n;
spi_send(a);
n = spi_send(b);
SPI.transfer(a);
n = SPI.transfer(b);
//if (n != a) error = -1;
n = spi_send(c);
return spi_send(d);
n = SPI.transfer(c);
return SPI.transfer(d);
}
void empty_reply() {
@ -259,25 +245,19 @@ void set_parameters() {
}
void start_pmode() {
spi_init();
// following delays may not work on all targets...
pinMode(RESET, OUTPUT);
SPI.begin();
digitalWrite(RESET, HIGH);
pinMode(SCK, OUTPUT);
pinMode(RESET, OUTPUT);
digitalWrite(SCK, LOW);
delay(50);
delay(20);
digitalWrite(RESET, LOW);
delay(50);
pinMode(MISO, INPUT);
pinMode(MOSI, OUTPUT);
spi_transaction(0xAC, 0x53, 0x00, 0x00);
pmode = 1;
}
void end_pmode() {
pinMode(MISO, INPUT);
pinMode(MOSI, INPUT);
pinMode(SCK, INPUT);
SPI.end();
digitalWrite(RESET, HIGH);
pinMode(RESET, INPUT);
pmode = 0;
}