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saved 48 bytes in rgb flame

This commit is contained in:
schneider 2011-12-18 01:55:02 +01:00
parent d9ccf797ea
commit 46dd1c116b
1 changed files with 11 additions and 6 deletions
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17
firmware/applications/final/flame_rgb.c
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@ -58,7 +58,7 @@
#define nick GLOBAL(nickname)
uint32_t flameRGBSetI2C(uint8_t cr, uint8_t value) {
static uint32_t flameRGBSetI2C(uint8_t cr, uint8_t value) {
I2CMasterBuffer[0] = FLAME_I2C_WRITE;
I2CMasterBuffer[1] = cr;
I2CMasterBuffer[2] = value;
@ -93,13 +93,18 @@ void setFlameRGBColor() {
} else {
// generate a hash from the nickname
uint32_t hash[4];
uint32_t const key[4] = {0xcfd97ebc, 0x21117b45, 0x7193727, 0xa336f4d6};
uint32_t const key[4] = {0, 0, 0, 0};
xxtea_cbcmac(hash, (uint32_t *)nick, 4, key);
// set color, LED0 = red, LED1 = unused, LED2 = blue, LED3 = green
flameRGBSetI2C(FLAME_I2C_CR_PWM0, hash[0] % 255);
flameRGBSetI2C(FLAME_I2C_CR_PWM1, hash[1] % 255);
flameRGBSetI2C(FLAME_I2C_CR_PWM2, hash[2] % 255);
flameRGBSetI2C(FLAME_I2C_CR_PWM3, hash[3] % 255);
int i;
uint8_t regs[] = {FLAME_I2C_CR_PWM0, FLAME_I2C_CR_PWM1,
FLAME_I2C_CR_PWM2, FLAME_I2C_CR_PWM3 };
for(i=0; i<3; i++)
flameRGBSetI2C(regs[i], hash[i] & 0xFF);
//flameRGBSetI2C(FLAME_I2C_CR_PWM0, hash[0] % 255);
//flameRGBSetI2C(FLAME_I2C_CR_PWM1, hash[1] % 255);
//flameRGBSetI2C(FLAME_I2C_CR_PWM2, hash[2] % 255);
//flameRGBSetI2C(FLAME_I2C_CR_PWM3, hash[3] % 255);
}
}