Diff: power.cpp

Revision:

0:84a8bcfbdec9

Child:

1:6a820a0ca03b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/power.cpp	Mon Oct 07 22:58:19 2013 +0000
@@ -0,0 +1,154 @@
+#include "dac.h"
+#include "power.h"
+
+using namespace std;
+
+#define INA_GAIN 200
+/*
+float current_meas(bool core)
+{     
+    float ampv = meas_amp * 3.3;
+    float vdrop = ampv / INA_GAIN;
+    float res = 1;
+    if(core){
+        res = 0.25;
+    }
+    return  vdrop / res;
+}
+*/
+
+
+void power_core(float core_volt)
+{
+    float periph_volt = core_volt;
+    
+    
+    if(core_volt > 1.1){
+        periph_volt = 1.1;
+    }
+    if(core_volt < 0.9){
+        periph_volt = 0.9;
+    }
+    
+    float mem_volt = core_volt;
+    
+    power_chan(PADVDD, periph_volt);
+    wait(POWER_UP_TIME);
+
+    // Core and Memory
+    power_chan(COREVDD, core_volt);
+    wait(POWER_UP_TIME);
+    power_chan(MEM1VDD, mem_volt);
+    wait(POWER_UP_TIME);
+    power_chan(MEM2VDD, mem_volt);
+    wait(POWER_UP_TIME);
+
+    // Clock
+    power_chan(CLOCKVDD, periph_volt);
+    wait(POWER_UP_TIME);
+    power_chan(PLLAVDD, periph_volt);
+    wait(POWER_UP_TIME);
+}
+
+
+void power_up(float core_volt)
+{
+    // The 1.8V supplies MUST be up whenever the 3.3V ones are
+    power_chan(ADVDD2, 1.8);
+    wait(POWER_UP_TIME);
+    power_chan(DVDD2, 1.8);
+    wait(POWER_UP_TIME);
+    
+    float new_power = core_volt;//////////////////////////////////////////////////////////
+    
+    // Other padring
+    power_chan(ADVDD, 3.3);
+    wait(POWER_UP_TIME);
+    power_chan(DVDD, 3.3);
+    wait(POWER_UP_TIME);
+    power_chan(PADVDD, 1.0);//power_chan(PADVDD, 1.0);
+    wait(POWER_UP_TIME);
+
+    // Core and Memory
+    power_chan(COREVDD, 1.0);
+    wait(POWER_UP_TIME);
+    power_chan(MEM1VDD, new_power);//power_chan(MEM1VDD, 1.0);
+    wait(POWER_UP_TIME);
+    power_chan(MEM2VDD, new_power);//power_chan(MEM2VDD, 1.0);
+    wait(POWER_UP_TIME);
+
+    // Clock
+    power_chan(CLOCKVDD, 1.0);//power_chan(CLOCKVDD, 1.0);
+    wait(POWER_UP_TIME);
+    power_chan(PLLAVDD, 1.0);//power_chan(PLLAVDD, 1.0);
+    wait(POWER_UP_TIME);
+    power_chan(RING_OSC_NBIAS, 0.75);
+    wait(POWER_UP_TIME);
+
+    // Sensor Supplies
+    power_chan(SENSORVDD, 1.0);//power_chan(SENSORVDD, 1.0);
+    wait(POWER_UP_TIME);
+    power_chan(SENSORLOWVDD, 0.35);
+    wait(POWER_UP_TIME);
+    power_chan(SENSORSTRESSVDD, 1.0);//power_chan(SENSORSTRESSVDD, 1.0);
+    wait(POWER_UP_TIME);
+
+    power_indicator = 1;
+}
+
+void power_down()
+{
+
+    // Zero/float all inputs, so they are not above DVDD when you lower it
+    PORESETn = 0;
+    CORERESETn = 0;
+    GPIO.input();
+    TCK = 0;
+    TMS = 0;
+    TDI = 0;
+    scan_data_in = 0;
+    scan_phi = 0;
+    scan_phi_bar = 0;
+    scan_load_chain = 0;
+    scan_load_chip = 0;
+
+    // Core and Memory
+    power_chan(COREVDD, 0);
+    wait(POWER_UP_TIME);
+    power_chan(MEM1VDD, 0);
+    wait(POWER_UP_TIME);
+    power_chan(MEM2VDD, 0);
+    wait(POWER_UP_TIME);
+
+    // Clock
+    power_chan(CLOCKVDD, 0);
+    wait(POWER_UP_TIME);
+    power_chan(PLLAVDD, 0);
+    wait(POWER_UP_TIME);
+    power_chan(RING_OSC_NBIAS, 0);
+    wait(POWER_UP_TIME);
+
+    // Sensor Supplies
+    power_chan(SENSORVDD, 0);
+    wait(POWER_UP_TIME);
+    power_chan(SENSORLOWVDD, 0);
+    wait(POWER_UP_TIME);
+    power_chan(SENSORSTRESSVDD, 0);
+    wait(POWER_UP_TIME);
+
+    // Other padring
+    power_chan(ADVDD, 0);
+    wait(POWER_UP_TIME);
+    power_chan(DVDD, 0);
+    wait(POWER_UP_TIME);
+    power_chan(PADVDD, 0);
+    wait(POWER_UP_TIME);
+
+    // The 1.8V supplies MUST be up whenever the 3.3V ones are
+    power_chan(ADVDD2, 0);
+    wait(POWER_UP_TIME);
+    power_chan(DVDD2, 0);
+    wait(POWER_UP_TIME);
+
+    power_indicator = 0;
+}
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