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F5OEO-WsprryPi
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Several fixes

master
pe1nnz 2013-03-20 11:07:10 +00:00
rodzic eb0afe1aa4
commit fe94fd0829
3 zmienionych plików z 9 dodań i 9 usunięć
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2
README
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@ -1,4 +1,4 @@
Raspberry Pi bareback LF/MF/HF WSPR transmitter Raspberry Pi bareback LF/MF/HF/VHF WSPR transmitter
Makes a very simple WSPR beacon from your RasberryPi by connecting GPIO Makes a very simple WSPR beacon from your RasberryPi by connecting GPIO
port to Antanna (and LPF), operates on LF, MF, HF and VHF bands from port to Antanna (and LPF), operates on LF, MF, HF and VHF bands from

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wspr
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16
wspr.c
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@ -1,6 +1,6 @@
/* /*
Raspberry Pi bareback LF/MF/HF WSPR transmitter Raspberry Pi bareback LF/MF/HF/VHF WSPR transmitter
Makes a very simple WSPR beacon from your RasberryPi by connecting GPIO Makes a very simple WSPR beacon from your RasberryPi by connecting GPIO
port to Antanna (and LPF), operates on LF, MF, HF and VHF bands from port to Antanna (and LPF), operates on LF, MF, HF and VHF bands from
@ -123,8 +123,8 @@ char *spi0_mem, *spi0_map;
// I/O access // I/O access
volatile unsigned *gpio; volatile unsigned *gpio = NULL;
volatile unsigned *allof7e; volatile unsigned *allof7e = NULL;
// GPIO setup macros. Always use INP_GPIO(x) before using OUT_GPIO(x) or SET_GPIO_ALT(x,y) // GPIO setup macros. Always use INP_GPIO(x) before using OUT_GPIO(x) or SET_GPIO_ALT(x,y)
#define INP_GPIO(g) *(gpio+((g)/10)) &= ~(7<<(((g)%10)*3)) #define INP_GPIO(g) *(gpio+((g)/10)) &= ~(7<<(((g)%10)*3))
@ -219,8 +219,8 @@ double fracs[1024];
void txon() void txon()
{ {
if(allof7e == NULL){
allof7e = (unsigned *)mmap( allof7e = (unsigned *)mmap(
NULL, NULL,
0x01000000, //len 0x01000000, //len
PROT_READ|PROT_WRITE, PROT_READ|PROT_WRITE,
@ -228,8 +228,8 @@ void txon()
mem_fd, mem_fd,
0x20000000 //base 0x20000000 //base
); );
if ((int)allof7e==-1) exit(-1);
if ((int)allof7e==-1) exit(-1); }
SETBIT(GPFSEL0 , 14); SETBIT(GPFSEL0 , 14);
CLRBIT(GPFSEL0 , 13); CLRBIT(GPFSEL0 , 13);
@ -254,7 +254,7 @@ void txSym(int sym, float tsym)
{ {
int bufPtr=0; int bufPtr=0;
short data; short data;
int iter = 1400; int iter = 4000;//1400;
int clocksPerIter = (int)(CAL_PWM_CLK*tsym/(float)iter); int clocksPerIter = (int)(CAL_PWM_CLK*tsym/(float)iter);
//printf("tsym=%f iter=%u clocksPerIter=%u tsymerr=%f\n", tsym, iter, clocksPerIter, tsym - ((float)clocksPerIter*(float)iter)/CAL_PWM_CLK ); //printf("tsym=%f iter=%u clocksPerIter=%u tsymerr=%f\n", tsym, iter, clocksPerIter, tsym - ((float)clocksPerIter*(float)iter)/CAL_PWM_CLK );
int i = sym*3 + 511; int i = sym*3 + 511;