Created
January 1, 2025 21:31
strange compiler error problem -- insn does not satisfy its constraints
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strange compiler error problem -- insn does not satisfy its constraints | |
this code worked on esp32 board libary 2.??? Arduino 1.8.19 | |
but not on esp32 board library 3.04 Arduino 1.8.19 | |
https://github.com/jameszah/ESP32-CAM-JAMCAM/tree/main/jamcamf68 | |
... Innocuous function call inside an object | |
both(snakeBXY[k][0], snakeBXY[k][1], snakeB_random_green * factor, snakeB_random_red * factor, snakeB_random_blue * factor, snakeB_random_green * 2, snakeB_random_red * 2, snakeB_random_blue * 2); | |
... which called this function | |
~~~~~~ | |
void both ( int x, int y, unsigned char g, unsigned char r, unsigned char b, unsigned char g2, unsigned char r2, unsigned char b2 ) { | |
int row = (y % disheight); | |
int col = ((row & 1) == 0) ? diswidth - 1 - (x % diswidth) : x % diswidth; | |
int sample = row * diswidth + col; | |
#ifndef FASTLED | |
gfx.setLED (sample, g, r, b); | |
#else | |
leds[sample] = CRGB (r, g, b); | |
#endif | |
if ( b == 0 && g == 0 && r == 0 ) { | |
Out[x][y][0] = 255; | |
Out[x][y][1] = 255; | |
Out[x][y][2] = 255; | |
} else { | |
Out[x][y][0] = b2; | |
Out[x][y][1] = g2; | |
Out[x][y][2] = r2; | |
} | |
} | |
~~~~~~ | |
... i tried pulling out all the calculations ... | |
unsigned char g = snakeB_random_green * factor; | |
unsigned char r = snakeB_random_red * factor; | |
unsigned char b = snakeB_random_blue * factor; | |
unsigned char g2 = snakeB_random_green * 2; | |
unsigned char r2 = snakeB_random_red * 2; | |
unsigned char b2 = snakeB_random_blue * 2; | |
int x = snakeBXY[k][0]; | |
int y = snakeBXY[k][1]; | |
both (x, y, g , r, b, g2, r2, b2); | |
... which did not help | |
~~~~ | |
... then copied the code inside the function and it works | |
unsigned char g = snakeB_random_green * factor; | |
unsigned char r = snakeB_random_red * factor; | |
unsigned char b = snakeB_random_blue * factor; | |
unsigned char g2 = snakeB_random_green * 2; | |
unsigned char r2 = snakeB_random_red * 2; | |
unsigned char b2 = snakeB_random_blue * 2; | |
int x = snakeBXY[k][0]; | |
int y = snakeBXY[k][1]; | |
int row = (y % disheight); | |
int col = ((row & 1) == 0) ? diswidth - 1 - (x % diswidth) : x % diswidth; | |
int sample = row * diswidth + col; | |
#ifndef FASTLED | |
gfx.setLED (sample, g, r, b); | |
#else | |
leds[sample] = CRGB (r, g, b); | |
#endif | |
if ( b == 0 && g == 0 && r == 0 ) { | |
Out[x][y][0] = 255; | |
Out[x][y][1] = 255; | |
Out[x][y][2] = 255; | |
} else { | |
Out[x][y][0] = b2; | |
Out[x][y][1] = g2; | |
Out[x][y][2] = r2; | |
} | |
... something about the function call is creating the "insn does not satisfy its constraints" problem |
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