firmware/retro_tech_fw/user/main.c

@@ -44,7 +44,7 @@ void gpio_init()
 
     gpio.GPIO_Speed = GPIO_Speed_2MHz;
 
-    // GAT SoftI2C, USART TX/RX; currently unused
+    // Soft I2C, USART TX/RX; currently unused
     gpio.GPIO_Mode = GPIO_Mode_IPD;
     gpio.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6;
     GPIO_Init(GPIOD, &gpio);
@@ -65,13 +65,10 @@ void gpio_init()
     gpio.GPIO_Pin = GPIO_Pin_2;
     GPIO_Init(GPIOD, &gpio);
 
-    // I2C SCL, SCA for on-board devices
+    // I2C will be handled by the driver
-    gpio.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2;
-    gpio.GPIO_Mode = GPIO_Mode_AF_OD;
-    GPIO_Init(GPIOC, &gpio);
 
-    // IS_SDB (PC3) IS31FL3729 shutdown pin (active low)
+    // IS_SDB IS31FL3729 shutdown pin (active low)
-    // WP (PC6) for EEPROM
+    // WP for EEPROM
     GPIOC->BCR = GPIO_Pin_3;
     GPIOC->BSHR = GPIO_Pin_6;
     gpio.GPIO_Mode = GPIO_Mode_Out_PP;

firmware/retro_tech_fw/user/src/31fl3729.c

@@ -9,23 +9,11 @@
 #include "i2c.h"
 
 
-
+/* sends the IS31FL3729 general config.
-void is31fl3729_set_global_current(uint8_t i2c_addr, uint8_t global_current)
-{
-    i2c_write_reg_8b(i2c_addr, FL3729_REG_G_CURRENT, global_current);
-}
-
-void is31fl3729_set_scaling_current(uint8_t i2c_addr, uint8_t cs, uint8_t current)
-{
-    if (cs > 0xf) return;
-
-    i2c_write_reg_8b(i2c_addr, FL3729_REG_SCALING + cs, current);
-}
-
-/* sends the IS31FL3729 initial config.
  * does not configure per-channel current sink limits; do that separately.
  * does not configure other sane defaults; do that separately.
  */
+
 void is31fl3729_init(uint8_t i2c_addr, uint8_t config, uint8_t global_current)
 {
     // enable device
@@ -38,7 +26,7 @@ void is31fl3729_init(uint8_t i2c_addr, uint8_t config, uint8_t global_current)
 
     // write initial config
     i2c_write_reg_8b(i2c_addr, FL3729_REG_CONFIG, config);
-    is31fl3729_set_global_current(i2c_addr, global_current);
+    i2c_write_reg_8b(i2c_addr, FL3729_REG_G_CURRENT, global_current);
 }
 
 uint8_t is31fl3729_get_addr(uint8_t adpin)
@@ -47,6 +35,18 @@ uint8_t is31fl3729_get_addr(uint8_t adpin)
 }
 
 
+void is31fl3729_set_global_current(uint8_t i2c_addr, uint8_t current)
+{
+    i2c_write_reg_8b(i2c_addr, FL3729_REG_G_CURRENT, current);
+}
+
+void is31fl3729_set_scaling_current(uint8_t i2c_addr, uint8_t cs, uint8_t current)
+{
+    if (cs > 0xf) return;
+
+    i2c_write_reg_8b(i2c_addr, FL3729_REG_SCALING + cs, current);
+}
+
 /*
  * sets current limit of multiple outputs simultaneously, starting from CS1.
  * useful for initial register configuration.

firmware/retro_tech_fw/user/src/31fl3729.h

@@ -72,7 +72,7 @@ void is31fl3729_init(uint8_t i2c_addr, uint8_t config, uint8_t global_current);
 
 uint8_t is31fl3729_get_addr(uint8_t adpin);
 
-void is31fl3729_set_global_current(uint8_t i2c_addr, uint8_t global_current);
+void is31fl3729_set_global_current(uint8_t i2c_addr, uint8_t current);
 void is31fl3729_set_scaling_current(uint8_t i2c_addr, uint8_t cs, uint8_t current);
 void is31fl3729_set_scaling_current_multi(uint8_t i2c_addr, const uint8_t *current, uint8_t count);
 

firmware/retro_tech_fw/user/src/i2c.c

@@ -23,9 +23,13 @@ static uint32_t timeout;
 
 void i2c_init()
 {
+    GPIO_InitTypeDef gpio = {0};
     I2C_InitTypeDef i2c = {0};
 
-    // ensure GPIO pins are configured before initializing
+    gpio.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2;
+    gpio.GPIO_Mode = GPIO_Mode_AF_OD;
+    gpio.GPIO_Speed = GPIO_Speed_2MHz;
+    GPIO_Init(GPIOC, &gpio);
 
     i2c.I2C_ClockSpeed = 666666;
     i2c.I2C_Mode = I2C_Mode_I2C;

firmware/retro_tech_fw/user/src/led_rgbprog.c

@@ -408,12 +408,12 @@ void led_rgb_4_typing(uint8_t preview, uint8_t tick)
             if ((i < typing_idx) || ((i == typing_idx) && typing_flash_state)) {
                 // these are on
                 rgb[i][j] = typing[color][j];
-            } else
+            }
 
             if (i > typing_idx) { // || ((i == typing_idx) && !typing_flash_state)) {
                 // these are idle
                 rgb[i][j] = idle_glow[j];
-            } else
+            }
 
             // flashing cursor fadeout
             if ((i == typing_idx) && !typing_flash_state) {
@@ -443,16 +443,12 @@ void led_rgb_4_typing(uint8_t preview, uint8_t tick)
         if (typing_fadeout >= 3) typing_fadeout--;
         else typing_fadeout = 0;
 
-        for (j = 0; j < 3; j++) {
+        for (i = 0; i < 9; i++) {
-            s = rgb[0][j];
+            for (j = 0; j < 3; j++) {
-            s *= typing_fadeout;
+                s = rgb[i][j];
-            rgb[0][j] = s >> 8;
+                s *= typing_fadeout;
-        }
+                rgb[i][j] = s >> 8;
-
+            }
-        for (i = 1; i < 9; i++) {
-            rgb[i][0] = rgb[0][0];
-            rgb[i][1] = rgb[0][1];
-            rgb[i][2] = rgb[0][2];
         }
 
         s = cursor[color];