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/**
* Sensor Watch Firmware Flasher
*
* This sketch is meant to run on an Adafruit PyRuler or Trinket.
* Connect the SWD, SWC and RST pads on the watch to pins 0, 1 and 3.
* Connect V+ on the watch to 3V, and GND to GND.
* This will power the watch from the Trinket so you don't need to plug the watch in to USB.
* Hit reset on the PyRuler / Trinket to begin the flashing process.
* The Trinket's red LED will blink slowly when the bootloader has been successfully written.
*/
#include "Adafruit_DAP.h"
#include "bootloader.h"
#define SWDIO 0
#define SWCLK 1
#define SWRST 3
#define BUFSIZE 256 //don't change!
//uint8_t buf[BUFSIZE];
//create a DAP for programming Atmel SAM devices
Adafruit_DAP_SAM dap;
// Function called when there's an SWD error
void error(const char *text) {
Serial.println(text);
while (1);
}
void setup() {
pinMode(13, OUTPUT);
Serial.begin(115200);
// while(!Serial) {
// delay(1); // will pause the chip until it opens serial console
// }
dap.begin(SWCLK, SWDIO, SWRST, &error);
Serial.print("Connecting...");
if (! dap.dap_disconnect()) error(dap.error_message);
char debuggername[100];
if (! dap.dap_get_debugger_info(debuggername)) error(dap.error_message);
Serial.print(debuggername); Serial.print("\n\r");
if (! dap.dap_connect()) error(dap.error_message);
if (! dap.dap_transfer_configure(0, 128, 128)) error(dap.error_message);
if (! dap.dap_swd_configure(0)) error(dap.error_message);
if (! dap.dap_reset_link()) error(dap.error_message);
if (! dap.dap_swj_clock(50)) error(dap.error_message);
dap.dap_target_prepare();
uint32_t dsu_did;
if (! dap.select(&dsu_did)) {
Serial.print("Unknown device found 0x"); Serial.print(dsu_did, HEX);
error("Unknown device found");
}
for (device_t *device = dap.devices; device->dsu_did > 0; device++) {
if (device->dsu_did == dsu_did) {
Serial.print("Found Target: ");
Serial.print(device->name);
Serial.print("\tFlash size: ");
Serial.print(device->flash_size);
Serial.print("\tFlash pages: ");
Serial.println(device->n_pages);
//Serial.print("Page size: "); Serial.println(device->flash_size / device->n_pages);
}
}
Serial.println(" done.");
Serial.print("Erasing... ");
dap.erase();
Serial.println(" done.");
Serial.print("Programming... ");
unsigned long t = millis();
uint32_t addr = dap.program_start();
while(addr < sizeof(binfile)){
dap.programBlock(addr, binfile + addr);
addr += BUFSIZE;
}
Serial.println(millis() - t);
Serial.println("\nDone!");
Serial.print("Fuses... ");
dap.fuseRead(); //MUST READ FUSES BEFORE SETTING OR WRITING ANY
Serial.println("read.");
dap._USER_ROW.bit.BOOTPROT = 0x2;
Serial.println("Setting BOOTPROT to 0x2 for 8192 byte bootloader");
dap.fuseWrite();
Serial.println("\nDone!!");
dap.dap_set_clock(50);
dap.deselect();
dap.dap_disconnect();
}
void loop() {
//blink led on the host to show we're done
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(500);
}
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