нещо немога да зацепя .немога да постигна толкова ниска честота на генериране с ШИМ, а трябваше да мога,другите таймери могат ама искам да управлявам и коефициента на запълване...доста съм объркан.


забележки да има!

● Using internal PWM modules

Internal PWM modules (more precisely: PWM modes of CCP modules) are turned on using PWMON statement. This statement has two arguments. The first argument is module number and it must be a constant in the range 1-3. The second argument is used for mode selection. Internal PWM module can be used on three different output frequencies for each of four duty cycle resolutions supported by PWMON statement (10-bit, 9-bit, 8-bit and 7-bit). So, PWM module can be turned on with PWMON statement in 12 modes. Here is the list of all modes at 4MHz clock frequency (for other clock frequencies, the values should be proportionally adjusted):
mode 1: 10-bit, 244Hz
mode 2: 10-bit, 977Hz
mode 3: 10-bit, 3906Hz
mode 4: 9-bit, 488Hz
mode 5: 9-bit, 1953Hz
mode 6: 9-bit, 7813Hz
mode 7: 8-bit, 977Hz
mode 8: 8-bit, 3906Hz
mode 9: 8-bit, 15625Hz
mode 10: 7-bit, 1953Hz
mode 11: 7-bit, 7813Hz
mode 12: 7-bit, 31250Hz
The PWM module is initially started with 0 duty cycle, so the output will stay low until the duty cycle is changed. PWM module can be turned off with PWMOFF statement. It has only one argument - module number.

The duty cycle of PWM signal can be changed with PWMDUTY statement. Its first argument is module number. The second argument is duty cycle and it can be a constant in the range 0-1023 or byte or word data type variable. User must take care to use the proper value ranges for all PWM modes (0-1023 for 10-bit resolution, 0-511 for 9-bit resolution, 0-255 for 8-bit resolution and 0-127 for 7-bit resolution). Here is
one example example:

DIM duty AS BYTE
PWMON 1, 9
loop:

ADCIN 0, duty
PWMDUTY 1, duty

GOTO loop

не е развойна среда