Revision 399f7d1b
Changed sonar/bom timer to 64 prescalar
Also fixed bug in the bom's timer usage, where it depended on an integer
overflow that was no longer occuring due to the higher F_CPU.
| scout_avr/src/range.cpp | ||
|---|---|---|
| 12 | 12 |
* |
| 13 | 13 |
* 37.5ms * 8 MHz / 8 prescaler = 37500 max wait |
| 14 | 14 |
* 37.5ms * 16 MHz / 8 prescaler = problem |
| 15 |
* 37.5ms * 16 MHz / 64 prescaler = 9375 max wait |
|
| 15 | 16 |
*/ |
| 16 | 17 |
|
| 17 | 18 |
struct range_t {
|
| ... | ... | |
| 64 | 65 |
// enable INT2 and INT3 |
| 65 | 66 |
EIMSK |= _BV(INT2) | _BV(INT3); |
| 66 | 67 |
|
| 67 |
// CS1 = 2, 1/8 prescaler
|
|
| 68 |
// CS1 = 3, 1/64 prescaler
|
|
| 68 | 69 |
// if this is changed, remember to change recv_edge in bom.cpp! |
| 69 |
TCCR5B = _BV(CS51); |
|
| 70 |
TCCR5B = _BV(CS50) | _BV(CS51);
|
|
| 70 | 71 |
|
| 71 | 72 |
// set tx as output |
| 72 | 73 |
DDRG |= _BV(DDG1); |
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