WIP: remove charger i2c comms for ref2d3

src/boards/reform2/board_reform2.c

@@ -28,7 +28,7 @@
   #include "protocol/protocol.h"
 #endif
 
-//#define REF2_DEBUG
+#define REF2_DEBUG 0
 
 #define INA260_ADDRESS 0x4e
 #define LTC4162F_ADDRESS 0x68
@@ -159,8 +159,12 @@ void measure_cell_voltages_and_control_discharge() {
   spir[1] = 0xc7;
 
   spir[2] = 0xe1; // set cdc to 2 = continuous measurement
-  spir[3] = discharge_bits&0xff; // first 8 bits of discharge switches
-  spir[4] = (discharge_bits&0x700)>>8; // last 4 bits of discharge switches
+  //spir[3] = discharge_bits&0xff; // first 8 bits of discharge switches
+  //spir[4] = (discharge_bits&0x700)>>8; // last 4 bits of discharge switches
+
+  spir[3] = 0x0;
+  spir[4] = 0x0;
+  
   spir[5] = 0x0;
   spir[6] = 0x0;
   spir[7] = 0x0;
@@ -296,84 +300,21 @@ float chg_vin;
 float chg_vbat;
 
 void configure_charger(int charge_current) {
-  // disable jeita
-  i2c_write16_be(LTC4162F_ADDRESS, 0x29, 0);
-
-  // set charge current
-  i2c_write16_be(LTC4162F_ADDRESS, 0x1a, charge_current);
-  
-  // disable max_cv_time
-  i2c_write16_be(LTC4162F_ADDRESS, 0x1d, 0);
-  
-  // set charge voltage
-  // 27 = 30V
-  // default 31 = 28.8V
-  i2c_write16_be(LTC4162F_ADDRESS, 0x1b, 31);
-
-  if (charge_current > 0) {
-    // config_bits_reg: unsuspend charger
-    i2c_write16_be(LTC4162F_ADDRESS, 0x14, 0);
-  } else {
-    // config_bits_reg: suspend charger
-    i2c_write16_be(LTC4162F_ADDRESS, 0x14, 1<<5);
-  }
-  
-  // set recharge threshold
-  // signed 16-bit number, max 32767! default 17424
-  i2c_write16_be(LTC4162F_ADDRESS, 0x2e, 30000);
-  
-  // read some charger regs
-  charger_state   = i2c_read16_be(LTC4162F_ADDRESS, 0x34);
-  charge_status   = i2c_read16_be(LTC4162F_ADDRESS, 0x35);
-  limit_alerts    = i2c_read16_be(LTC4162F_ADDRESS, 0x36);
-  charger_alerts  = i2c_read16_be(LTC4162F_ADDRESS, 0x37);
-  status_alerts   = i2c_read16_be(LTC4162F_ADDRESS, 0x38);
-  system_status   = i2c_read16_be(LTC4162F_ADDRESS, 0x39);
-
-  chg_vbat   = i2c_read16_be(LTC4162F_ADDRESS, 0x3a);
-  chg_vin   = i2c_read16_be(LTC4162F_ADDRESS, 0x3b);
-  float chg_vout   = i2c_read16_be(LTC4162F_ADDRESS, 0x3c);
-  //float chg_ibat   = i2c_read16_be(LTC4162F_ADDRESS, 0x3d);
-  //float chg_iin   = i2c_read16_be(LTC4162F_ADDRESS, 0x3e);
-  //int16_t chg_chem   = (i2c_read16_be(LTC4162F_ADDRESS, 0x43) >> 8) & 0xf;
-  //int16_t chg_cell_count   = (i2c_read16_be(LTC4162F_ADDRESS, 0x43)) & 0xf;
-
-  //uint16_t tchargetimer   = i2c_read16_be(LTC4162F_ADDRESS, 0x30);
-  //uint16_t tcvtimer   = i2c_read16_be(LTC4162F_ADDRESS, 0x31);
-  //uint16_t tabsorbtimer   = i2c_read16_be(LTC4162F_ADDRESS, 0x32);
-  
-  chg_vin*=1.649;
-  chg_vbat*=(8.0*0.1924);
-  chg_vout*=1.653;
-
-#ifdef REF2_DEBUG
-  sprintf(uartBuffer,"ltc state: %x status: %x system: %x\r\n",charger_state,charge_status,system_status);
-  uartSend((uint8_t *)uartBuffer, strlen(uartBuffer));
-#endif
-  
-  //sprintf(uartBuffer,"ltc vbat: %f vin: %f vout: %f\r\n",chg_vbat,chg_vin,chg_vout);
-  //uartSend((uint8_t *)uartBuffer, strlen(uartBuffer));
-  
-  //sprintf(uartBuffer,"ltc chemistry: %d cell count: %d\r\n",chg_chem,chg_cell_count);
-  //uartSend((uint8_t *)uartBuffer, strlen(uartBuffer));
-
-  //sprintf(uartBuffer,"config: jeita: %d thermal_reg: %d ilim_reg: %d vin_uvcl: %d iin_limit: %d\r\n",charger_config&1, !!(charge_status&16), !!(charge_status&32), !!(charge_status&8), !!(charge_status&4));
-  //uartSend((uint8_t *)uartBuffer, strlen(uartBuffer));
-  
-  //sprintf(uartBuffer,"tchgt: %d tcvt: %d tabsorbt: %d\r\n\r\n",tchargetimer,tcvtimer,tabsorbtimer);
-  //uartSend((uint8_t *)uartBuffer, strlen(uartBuffer));
 }
 
 void turn_som_power_on(void) {
-  LPC_GPIO->CLR[1] = (1 << 16); // 3v3, low = on
-  LPC_GPIO->CLR[0] = (1 << 20); // PCIe, low = on
+  LPC_GPIO->SET[1] = (1 << 16); // 3v3, high = on
+  // FIXME this turns 1v5 off :/
+  LPC_GPIO->SET[0] = (1 << 20); // PCIe, low = on
   LPC_GPIO->SET[1] = (1 << 15); // 5v, high = on
+  LPC_GPIO->SET[1] = (1 << 19); // 1v2, high = on
 }
 
 void turn_som_power_off(void) {
+  LPC_GPIO->CLR[1] = (1 << 19); // 1v2, high = on
   LPC_GPIO->CLR[1] = (1 << 15); // 5v, high = on
-  LPC_GPIO->SET[0] = (1 << 20); // PCIe, low = on
-  LPC_GPIO->SET[1] = (1 << 16); // 3v3, low = on
+  LPC_GPIO->CLR[0] = (1 << 20); // PCIe, low = on
+  LPC_GPIO->CLR[1] = (1 << 16); // 3v3, high = on
 
   // FIXME experiment: temp. disable charger to reset its timers
   configure_charger(0);
@@ -423,10 +364,12 @@ void boardInit(void)
   LPC_GPIO->DIR[1] |= (1 << 15);
   // 3V3 rail transistor on/off
   LPC_GPIO->DIR[1] |= (1 << 16);
+  // 1V2 regulator on/off
+  LPC_GPIO->DIR[1] |= (1 << 19);
   // PCIe 1 power supply transistor
   LPC_GPIO->DIR[0] |= (1 << 20);
-
-  turn_som_power_off();
+  
+  turn_som_power_on();
   
   uartInit(CFG_UART_BAUDRATE);
   i2cInit(I2CMASTER);
@@ -439,16 +382,18 @@ void boardInit(void)
   // SPI chip select
   LPC_GPIO->DIR[1] |= (1 << 23);
   LPC_GPIO->SET[1] =  (1 << 23); // active low
-
-  //sprintf(uartBuffer, "\r\nMNT Reform 2.0 MCU initialized.\r\n");
-  //uartSend((uint8_t*)uartBuffer, strlen(uartBuffer));
+  
+#ifdef REF2_DEBUG
+  sprintf(uartBuffer, "\r\nMNT Reform 2.0 MCU initialized.\r\n");
+  uartSend((uint8_t*)uartBuffer, strlen(uartBuffer));
+#endif
 }
 
 char remote_cmd = 0;
 uint8_t remote_arg = 0;
 unsigned char cmd_state = ST_EXPECT_DIGIT_0;
 unsigned int cmd_number = 0;
-int cmd_echo = 0;
+int cmd_echo = 1;
 
 void handle_commands() {
   if (!uartRxBufferDataPending()) return;
@@ -608,17 +553,15 @@ void handle_commands() {
 int main(void)
 {
   boardInit();
-  reset_discharge_bits();
+  //reset_discharge_bits();
   
   state = ST_CHARGE;
   cycles_in_state = 0;
 
-  delay(500);
-
   last_second = delayGetSecondsActive();
 
   // WIP, not yet tested
-  watchdog_setup();
+  //watchdog_setup();
   //sprintf(uartBuffer, "\r\nwatchdog_setup() completed.\r\n");
   //uartSend((uint8_t*)uartBuffer, strlen(uartBuffer));
   
@@ -636,12 +579,12 @@ int main(void)
 
     // charge current 2: ~0.2A
 
-    watchdog_feed();
+    //watchdog_feed();
 
     measure_and_accumulate_current();
     measure_cell_voltages_and_control_discharge();
 
-    if (state == ST_CHARGE) {
+    /*if (state == ST_CHARGE) {
       configure_charger(charge_current);
       
       if (cycles_in_state > 5) {
@@ -692,7 +635,7 @@ int main(void)
           cycles_in_state = 0;
         }
       }
-    }
+      }*/
     
     handle_commands();
     cur_second = delayGetSecondsActive();