Hey
I want to use stm32f0 by ws2812 and keil. this is my code
/* * light weight WS2812 lib - ARM Cortex M0/M0+ version * * Created: 07.07.2013 * Author: Tim (cpldcpu@gmail.com) */
#include "light_ws2812_cortex.h"
/* * The total length of each bit is 1.25µs (25 cycles @ 20Mhz) * At 0µs the dataline is pulled high. * To send a zero the dataline is pulled low after 0.375µs * To send a one the dataline is pulled low after 0.625µs */
#define ws2812_ctot (((ws2812_cpuclk/1000)*1250)/1000000) #define ws2812_t1 (((ws2812_cpuclk/1000)*375 )/1000000) // floor #define ws2812_t2 (((ws2812_cpuclk/1000)*625+500000)/1000000) // ceil
#define w1 (ws2812_t1-2) #define w2 (ws2812_t2-ws2812_t1-2) #define w3 (ws2812_ctot-ws2812_t2-5)
#define ws2812_DEL1 " nop \n\t" #define ws2812_DEL2 " b .+2 \n\t" #define ws2812_DEL4 ws2812_DEL2 ws2812_DEL2 #define ws2812_DEL8 ws2812_DEL4 ws2812_DEL4 #define ws2812_DEL16 ws2812_DEL8 ws2812_DEL8
void ws2812_sendarray(uint8_t *data,int datlen) { uint32_t maskhi = ws2812_mask_set; uint32_t masklo = ws2812_mask_clr; volatile uint32_t *set = ws2812_port_set; volatile uint32_t *clr = ws2812_port_clr; uint32_t i; uint32_t curbyte;
while (datlen--) { curbyte=*data++;
asm volatile( " lsl %[dat],#24 \n" " movs %[ctr],#8 \n" "ilop%=: \n" " lsl %[dat], #1 \n" " str %[maskhi], [%[set]] \n" #if (w1&1) ws2812_DEL1 #endif #if (w1&2) ws2812_DEL2 #endif #if (w1&4) ws2812_DEL4 #endif #if (w1&8) ws2812_DEL8 #endif #if (w1&16) ws2812_DEL16 #endif " bcs one%= \n" " str %[masklo], [%[clr]] \n" "one%=: \n" #if (w2&1) ws2812_DEL1 #endif #if (w2&2) ws2812_DEL2 #endif #if (w2&4) ws2812_DEL4 #endif #if (w2&8) ws2812_DEL8 #endif #if (w2&16) ws2812_DEL16 #endif " sub %[ctr], #1 \n" " str %[masklo], [%[clr]] \n" " beq end%= \n\t" #if (w3&1) ws2812_DEL1 #endif #if (w3&2) ws2812_DEL2 #endif #if (w3&4) ws2812_DEL4 #endif #if (w3&8) ws2812_DEL8 #endif #if (w3&16) ws2812_DEL16 #endif
" b ilop%= \n\t" " end%=: \n\t" : [ctr] "+r" (i) : [dat] "r" (curbyte), [set] "r" (set), [clr] "r" (clr), [masklo] "r" (masklo), [maskhi] "r" (maskhi) ); } }
but i have a problem 1-light_ws2812_cortex.c(45): error: #20: identifier "asm" is undefined but if i change asm to __asm the error change to light_ws2812_cortex.c(105): error: #18: expected a ")" :ctr] "+r" (i) how can i fix it?
So I did not have it and modified the code for Keil
/* * light weight WS2812 lib - ARM Cortex M0/M0+ version * * Created: 07.07.2013 * Author: Tim (cpldcpu@gmail.com) */ #include "light_ws2812_cortex.h" /* * The total length of each bit is 1.25µs (25 cycles @ 20Mhz) * At 0µs the dataline is pulled high. * To send a zero the dataline is pulled low after 0.375µs * To send a one the dataline is pulled low after 0.625µs */ #define ws2812_ctot (((ws2812_cpuclk/1000)*1250)/1000000) #define ws2812_t1 (((ws2812_cpuclk/1000)*375 )/1000000) // floor #define ws2812_t2 (((ws2812_cpuclk/1000)*625+500000)/1000000) // ceil #define w1 (ws2812_t1-2) #define w2 (ws2812_t2-ws2812_t1-2) #define w3 (ws2812_ctot-ws2812_t2-5) #define ws2812_DEL1 " nop \n\t" #define ws2812_DEL2 " b .+2 \n\t" #define ws2812_DEL4 ws2812_DEL2 ws2812_DEL2 #define ws2812_DEL8 ws2812_DEL4 ws2812_DEL4 #define ws2812_DEL16 ws2812_DEL8 ws2812_DEL8 void ws2812_sendarray(uint8_t *data,int datlen) { uint32_t maskhi = ws2812_mask_set; uint32_t masklo = ws2812_mask_clr; volatile uint32_t *set = ws2812_port_set; volatile uint32_t *clr = ws2812_port_clr; uint32_t i; uint32_t curbyte; while (datlen--) { curbyte=*data++; __asm volatile( " lsl curbyte,#24 \n\t" " movs i,#8 \n\t" "ilop: \n\t" //"ilop%=: \n\t" " lsl curbyte, #1 \n\t" " str maskhi, [set] \n\t" #if (w1&1) ws2812_DEL1 #endif #if (w1&2) ws2812_DEL2 #endif #if (w1&4) ws2812_DEL4 #endif #if (w1&8) ws2812_DEL8 #endif #if (w1&16) ws2812_DEL16 #endif " bcs one%= \n\t" " str masklo, [clr] \n\t" "one%=: \n\t" #if (w2&1) ws2812_DEL1 #endif #if (w2&2) ws2812_DEL2 #endif #if (w2&4) ws2812_DEL4 #endif #if (w2&8) ws2812_DEL8 #endif #if (w2&16) ws2812_DEL16 #endif " sub ctr, #1 \n\t" " str masklo, [clr] \n\t" " beq end%= \n\t" #if (w3&1) ws2812_DEL1 #endif #if (w3&2) ws2812_DEL2 #endif #if (w3&4) ws2812_DEL4 #endif #if (w3&8) ws2812_DEL8 #endif #if (w3&16) ws2812_DEL16 #endif " b ilop \n\t" "end%=: \n\t" ); } }
ank keil return this
*** Using Compiler 'V5.06 update 4 (build 422)', folder: 'C:\Keil\ARM\ARMCC\Bin' compiling light_ws2812_cortex.c... Internal fault: [0x03ab7c:5060422] Please contact your supplier.
Internal fault genarate code on line remarked as comment //
/* * light weight WS2812 lib - ARM Cortex M0/M0+ version * * Created: 07.07.2013 * Author: Tim (cpldcpu@gmail.com) */ #include "light_ws2812_cortex.h" /* * The total length of each bit is 1.25µs (25 cycles @ 20Mhz) * At 0µs the dataline is pulled high. * To send a zero the dataline is pulled low after 0.375µs * To send a one the dataline is pulled low after 0.625µs */ #define ws2812_ctot (((ws2812_cpuclk/1000)*1250)/1000000) #define ws2812_t1 (((ws2812_cpuclk/1000)*375 )/1000000) // floor #define ws2812_t2 (((ws2812_cpuclk/1000)*625+500000)/1000000) // ceil #define w1 (ws2812_t1-2) #define w2 (ws2812_t2-ws2812_t1-2) #define w3 (ws2812_ctot-ws2812_t2-5) #define ws2812_DEL1 " nop \n\t" #define ws2812_DEL2 " b .+2 \n\t" #define ws2812_DEL4 ws2812_DEL2 ws2812_DEL2 #define ws2812_DEL8 ws2812_DEL4 ws2812_DEL4 #define ws2812_DEL16 ws2812_DEL8 ws2812_DEL8 void ws2812_sendarray(uint8_t *data,int datlen) { uint32_t maskhi = ws2812_mask_set; uint32_t masklo = ws2812_mask_clr; volatile uint32_t *set = ws2812_port_set; volatile uint32_t *clr = ws2812_port_clr; uint32_t i; uint32_t curbyte; while (datlen--) { curbyte=*data++; __asm volatile( " lsl curbyte,#24 \n\t" " movs i,#8 \n\t" "ilop: \n\t" " lsl curbyte, #1 \n\t" " str maskhi, [set] \n\t" #if (w1&1) ws2812_DEL1 #endif #if (w1&2) ws2812_DEL2 #endif #if (w1&4) ws2812_DEL4 #endif #if (w1&8) // ws2812_DEL8 #endif #if (w1&16) ws2812_DEL16 #endif " bcs one \n\t" " str masklo, [clr] \n\t" "one: \n\t" #if (w2&1) ws2812_DEL1 #endif #if (w2&2) // ws2812_DEL2 #endif #if (w2&4) // ws2812_DEL4 #endif #if (w2&8) ws2812_DEL8 #endif #if (w2&16) ws2812_DEL16 #endif " sub i, #1 \n\t" " str masklo, [clr] \n\t" " beq end \n\t" #if (w3&1) ws2812_DEL1 #endif #if (w3&2) ws2812_DEL2 #endif #if (w3&4) // ws2812_DEL4 #endif #if (w3&8) // ws2812_DEL8 #endif #if (w3&16) ws2812_DEL16 #endif " b ilop \n\t" "end: \n\t" ); } }