So I was trying this code I got right off a book but changing the pin
where I should have the PWM signal output... but it is not working...
any guesses why?... PD: I can't do debugging because I have a strange
error on executing the ELF file.
Wrote this code on and did the programming on atmel studio 7 with the
atmel - ice.
1 | #include "sam.h"
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2 | |
3 | unsigned char* ARRAY_PORT_PINCFG0 = (unsigned char*)®_PORT_PINCFG0;
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4 | unsigned char* ARRAY_PORT_PMUX0 = (unsigned char*)®_PORT_PMUX0;
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5 | |
6 | int main(void)
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7 | {
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8 |
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9 | REG_GCLK_CLKCTRL = 0x401A; //TCC0 para PWM en GCLK0
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10 | REG_PM_APBCMASK |= 0x00000100; //Enable TCC0, es la funcion F para el pin PA17
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11 | REG_TCC0_CTRLA = 1; //Reset al registro
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12 | |
13 | while(REG_TCC0_CTRLA & 1){} //Esperar hasta sincronizar
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14 |
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15 | REG_TCC0_WAVE = 2; // Modo PWM normal
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16 | REG_TCC0_PER = 16666-1;
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17 | REG_TCC0_CC0 = 5555-1;
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18 | REG_TCC0_CTRLA |= 2;
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19 |
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20 | ARRAY_PORT_PINCFG0[17] |= 1; //Activa el multiplexor a perifericos
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21 | ARRAY_PORT_PMUX0[8] = (0x5<<4);
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22 |
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23 | while (1)
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24 | {
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25 | }
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26 | }
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