#include "usbdrv.h"
#include "libs-device/osccal.h"
+#include "timer.h"
#include "w1.h"
typedef struct {
} keyboard_report_t;
keyboard_report_t keyboard_report;
+uint8_t temp_state = 0;
+uint16_t last_temp = 0xFFFD;
+#define TEMP_INTERVAL (10 * 1000)
+
uint8_t temp_report[8];
bool have_temp_int = false;
}
}
+uint16_t read_temp(void)
+{
+ uint8_t buf[9];
+
+ cli();
+ if (!w1_reset()) {
+ return 0xFFFF;
+ sei();
+ }
+
+ w1_write(0xCC); /* SKIP ROM */
+ w1_write(0x44); /* Convert T */
+
+ do {
+ w1_read(buf, 1);
+ } while (buf[0] != 0xFF);
+
+ if (!w1_reset()) {
+ return 0xFFFF;
+ sei();
+ }
+
+ w1_write(0xCC); /* SKIP ROM */
+ w1_write(0xBE); /* Read Scratchpad */
+ w1_read(buf, 9);
+ sei();
+
+ return buf[2] << 8 | buf[1];
+}
+
usbMsgLen_t usbFunctionDescriptor(usbRequest_t *rq)
{
if (rq->wValue.bytes[1] == USBDESCR_STRING &&
usbMsgLen_t usbFunctionWrite(uint8_t * data, uchar len)
{
if (len == 1) {
+ PORTB |= 1 << PB1; // LED on
if (data[0] != ledstate) {
ledstate = data[0];
if (data[1] == 0x80 && data[2] == 0x33 && data[3] == 1) {
/* Temperature query */
+ memset(temp_report, 0, 8);
have_temp_int = true;
temp_report[0] = 0x80;
temp_report[1] = 2;
- /* Fake 15°C */
- temp_report[2] = 0xF;
- temp_report[3] = 0x0;
-
+ temp_report[2] = last_temp >> 8;
+ temp_report[3] = last_temp & 0xFF;
} else if (data[1] == 0x82 && data[2] == 0x77 &&
data[3] == 1) {
/* Initialisation Query #1 */
return 0;
}
+void hadUsbReset(void)
+{
+ /* Reset our state machine back to having nothing to send */
+ temp_state = 0;
+ have_temp_int = false;
+}
+
int main(void)
{
unsigned char i;
+ uint8_t buf[9];
+ unsigned long last_temp_time = 0;
wdt_enable(WDTO_1S);
w1_setup();
set_serial();
+ timer_init();
- usbInit();
usbDeviceDisconnect();
-
i = 0;
while (--i) {
wdt_reset();
_delay_ms(1);
}
-
usbDeviceConnect();
+ usbInit();
+
/* PB1 as output for LED */
DDRB |= 1 << PB1;
have_temp_int = false;
}
}
+
+ if (temp_state == 1) {
+ if (w1_reset()) {
+ temp_state = 2;
+ } else {
+ temp_state = 0;
+ }
+ } else if (temp_state == 2) {
+ w1_write(0xCC); /* SKIP ROM */
+ temp_state = 3;
+ } else if (temp_state == 3) {
+ w1_write(0x44); /* Convert T */
+ temp_state = 4;
+ } else if (temp_state == 4) {
+ if (w1_read_bit())
+ temp_state = 5;
+ } else if (temp_state == 5) {
+ if (w1_reset()) {
+ temp_state = 6;
+ } else {
+ temp_state = 0;
+ }
+ } else if (temp_state == 6) {
+ w1_write(0xCC); /* SKIP ROM */
+ temp_state = 7;
+ } else if (temp_state == 7) {
+ w1_write(0xBE); /* Read Scratchpad */
+ temp_state = 8;
+ } else if (temp_state > 7 && temp_state < 17) {
+ buf[temp_state - 8] = w1_read_byte();
+ temp_state++;
+ } else if (temp_state == 17) {
+ last_temp = buf[1] << 12 | buf[0] << 4;
+ temp_state = 0;
+ last_temp_time = millis();
+ }
+
+ if (temp_state == 0 &&
+ (millis() - last_temp_time) > TEMP_INTERVAL) {
+ temp_state = 1;
+ }
}
}