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make led1642gw.c more generic

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This commit is contained in:
Stefan Rupp 2014-04-16 22:43:21 +02:00
parent 8bc7c6a4af
commit e330e259a1
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. * the data registers of the LED1642 ICs.
*/ */
static uint16_t ledbuffer[NUM_LED_CHANNELS]; static uint16_t ledbuffer[NUM_LED_CHANNELS];
static uint16_t config_reg[3];
/* /*
* Write 16 bits of \data, with LE set high * 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(data, 4);
} }
/* /*
* Write data to BRIGHTNESS GLOBAL LATCH register. * Write data to BRIGHTNESS GLOBAL LATCH register.
* that means setting LE high for 5 or 6 clock cycles * 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); write_data(data, 6);
} }
/* /*
* This function shifts data through the 16bit shift * This function shifts data through the 16bit shift
* register of the LED1642GW, without writing the data * 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 * Turn all channels on, so the data in the DATA LATCH
* register affects the LEDs attached to the IC. * 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) void led1642gw_turn_all_on(void)
{ {
write_data(0xffff, 2); uint8_t ic;
write_data(0xffff, 2); for (ic=0; ic<(NUM_LED1642GW_ICs-1); ic++) {
write_no_command(0xffff);
}
write_data(0xffff, 2); write_data(0xffff, 2);
} }
@ -115,9 +133,10 @@ void led1642gw_turn_all_on(void)
*/ */
void led1642gw_turn_all_off(void) void led1642gw_turn_all_off(void)
{ {
uint8_t ic;
write_data(0x0000, 2); for (ic=0; ic<(NUM_LED1642GW_ICs-1); ic++) {
write_data(0x0000, 2); write_no_command(0x0000);
}
write_data(0x0000, 2); write_data(0x0000, 2);
} }
@ -137,6 +156,7 @@ void led1642gw_init(void)
DDR_SDI |= (1<<PIN_SDI); DDR_SDI |= (1<<PIN_SDI);
DDR_LE |= (1<<PIN_LE); DDR_LE |= (1<<PIN_LE);
memset(ledbuffer, 0x00, sizeof(ledbuffer)); memset(ledbuffer, 0x00, sizeof(ledbuffer));
memset(config_reg, 0x00, sizeof(config_reg));
led1642gw_flush(); led1642gw_flush();
} }
@ -196,3 +216,4 @@ void led1642gw_clear(void)
memset(ledbuffer, 0x00, sizeof(ledbuffer)); memset(ledbuffer, 0x00, sizeof(ledbuffer));
} }