@@ 17,17 17,17 @@
#include "i2c_master.h"
// This is the full 8-bit address
-#define ISSI_ADDRESS 0b10101000
+#define IS31FL3218_I2C_ADDRESS 0xA8
// These are the register addresses
-#define ISSI_REG_SHUTDOWN 0x00
-#define ISSI_REG_PWM 0x01
-#define ISSI_REG_CONTROL 0x13
-#define ISSI_REG_UPDATE 0x16
-#define ISSI_REG_RESET 0x17
+#define IS31FL3218_REG_SHUTDOWN 0x00
+#define IS31FL3218_REG_PWM 0x01
+#define IS31FL3218_REG_CONTROL 0x13
+#define IS31FL3218_REG_UPDATE 0x16
+#define IS31FL3218_REG_RESET 0x17
// Default timeout if no I2C response
-#define ISSI_TIMEOUT 100
+#define IS31FL3218_I2C_TIMEOUT 100
// Reusable buffer for transfers
uint8_t g_twi_transfer_buffer[20];
@@ 40,35 40,35 @@ bool g_pwm_buffer_update_required = false;
void is31fl3218_write_register(uint8_t reg, uint8_t data) {
g_twi_transfer_buffer[0] = reg;
g_twi_transfer_buffer[1] = data;
- i2c_transmit(ISSI_ADDRESS, g_twi_transfer_buffer, 2, ISSI_TIMEOUT);
+ i2c_transmit(IS31FL3218_I2C_ADDRESS, g_twi_transfer_buffer, 2, IS31FL3218_I2C_TIMEOUT);
}
void is31fl3218_write_pwm_buffer(uint8_t *pwm_buffer) {
- g_twi_transfer_buffer[0] = ISSI_REG_PWM;
+ g_twi_transfer_buffer[0] = IS31FL3218_REG_PWM;
memcpy(g_twi_transfer_buffer + 1, pwm_buffer, 18);
- i2c_transmit(ISSI_ADDRESS, g_twi_transfer_buffer, 19, ISSI_TIMEOUT);
+ i2c_transmit(IS31FL3218_I2C_ADDRESS, g_twi_transfer_buffer, 19, IS31FL3218_I2C_TIMEOUT);
}
void is31fl3218_init(void) {
// In case we ever want to reinitialize (?)
- is31fl3218_write_register(ISSI_REG_RESET, 0x00);
+ is31fl3218_write_register(IS31FL3218_REG_RESET, 0x00);
// Turn off software shutdown
- is31fl3218_write_register(ISSI_REG_SHUTDOWN, 0x01);
+ is31fl3218_write_register(IS31FL3218_REG_SHUTDOWN, 0x01);
// Set all PWM values to zero
for (uint8_t i = 0; i < 18; i++) {
- is31fl3218_write_register(ISSI_REG_PWM + i, 0x00);
+ is31fl3218_write_register(IS31FL3218_REG_PWM + i, 0x00);
}
// Enable all channels
for (uint8_t i = 0; i < 3; i++) {
- is31fl3218_write_register(ISSI_REG_CONTROL + i, 0b00111111);
+ is31fl3218_write_register(IS31FL3218_REG_CONTROL + i, 0b00111111);
}
// Load PWM registers and LED Control register data
- is31fl3218_write_register(ISSI_REG_UPDATE, 0x01);
+ is31fl3218_write_register(IS31FL3218_REG_UPDATE, 0x01);
}
void is31fl3218_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
@@ 91,7 91,7 @@ void is31fl3218_update_pwm_buffers(void) {
if (g_pwm_buffer_update_required) {
is31fl3218_write_pwm_buffer(g_pwm_buffer);
// Load PWM registers and LED Control register data
- is31fl3218_write_register(ISSI_REG_UPDATE, 0x01);
+ is31fl3218_write_register(IS31FL3218_REG_UPDATE, 0x01);
}
g_pwm_buffer_update_required = false;
}