struppi/rgbyteclock-code
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merge default branch into patterns

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This commit is contained in:
Stefan Rupp 2014-04-16 22:46:50 +02:00
commit 1b7c6fa5a1
1 changed files with 27 additions and 6 deletions
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33
led1642gw.c
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@ -29,7 +29,7 @@
* the data registers of the LED1642 ICs.
*/
static uint16_t ledbuffer[NUM_LED_CHANNELS];
static uint16_t config_reg[3];
/*
* Write 16 bits of \data, with LE set high
@ -75,6 +75,7 @@ static void write_data_latch(uint16_t data)
write_data(data, 4);
}
/*
* Write data to BRIGHTNESS GLOBAL LATCH register.
* that means setting LE high for 5 or 6 clock cycles
@ -84,6 +85,7 @@ static void write_global_latch(uint16_t data)
write_data(data, 6);
}
/*
* This function shifts data through the 16bit shift
* register of the LED1642GW, without writing the data
@ -97,6 +99,20 @@ static void write_no_command(uint16_t data)
}
/*
* Write data to CONFIG register.
* that means setting LE high for 7 clock cycles
*/
void led1642gw_flush_config(void)
{
uint8_t ic;
for (ic=0; ic<(NUM_LED1642GW_ICs-1); ic++) {
write_no_command(config_reg[ic]);
}
write_data(config_reg[ic], 7);
}
/*
* Turn all channels on, so the data in the DATA LATCH
* register affects the LEDs attached to the IC.
@ -104,8 +120,10 @@ static void write_no_command(uint16_t data)
void led1642gw_turn_all_on(void)
{
write_data(0xffff, 2);
write_data(0xffff, 2);
uint8_t ic;
for (ic=0; ic<(NUM_LED1642GW_ICs-1); ic++) {
write_no_command(0xffff);
}
write_data(0xffff, 2);
}
@ -115,9 +133,10 @@ void led1642gw_turn_all_on(void)
*/
void led1642gw_turn_all_off(void)
{
write_data(0x0000, 2);
write_data(0x0000, 2);
uint8_t ic;
for (ic=0; ic<(NUM_LED1642GW_ICs-1); ic++) {
write_no_command(0x0000);
}
write_data(0x0000, 2);
}
@ -137,6 +156,7 @@ void led1642gw_init(void)
DDR_SDI |= (1<<PIN_SDI);
DDR_LE |= (1<<PIN_LE);
memset(ledbuffer, 0x00, sizeof(ledbuffer));
memset(config_reg, 0x00, sizeof(config_reg));
led1642gw_flush();
}
@ -196,3 +216,4 @@ void led1642gw_clear(void)
memset(ledbuffer, 0x00, sizeof(ledbuffer));
}