Diff: MAX4822.cpp

Revision:

1:0263f798de82

Parent:

0:074983020f27

Child:

2:7b30a3361e40

--- a/MAX4822.cpp	Thu Jul 28 18:42:58 2016 +0000
+++ b/MAX4822.cpp	Thu Jul 28 21:41:40 2016 +0000
@@ -33,9 +33,22 @@
 #include "MAX4822.h"
 
 //*********************************************************************
-MAX4822::MAX4822(SPI & spi_bus, PinName cs, PinName set, PinName reset): 
-m_spi(spi_bus), m_cs(cs), m_set(set, 1), m_reset(reset, 0), m_num_devices(1)
+MAX4822::MAX4822(SPI & spi_bus, PinName cs, uint8_t num_devices): 
+m_spi(spi_bus), m_cs(cs, 1), m_num_devices(num_devices)
 {
+    if(m_num_devices)
+    {
+        for(uint8_t idx = 0; idx < m_num_devices; idx++)
+        {
+            m_relay_data[idx] = 0;
+            m_pwr_save_data[idx] = 0;
+        }
+    }
+    else
+    {
+        m_relay_data[0] = 0;
+        m_pwr_save_data[0] = 0;
+    }
 }
 
 //*********************************************************************
@@ -44,13 +57,43 @@
 }
 
 //*********************************************************************
-MAX4822::CmdResult MAX4822::set_num_devices(uint8_t n)
+void MAX4822::set_all_relays(DigitalOut & set)
+{
+    set = 0;
+    wait_us(1);
+    set = 1;
+}
+
+//*********************************************************************
+void MAX4822::reset_all_relays(DigitalOut & reset)
+{
+    reset = 0;
+    wait_us(1);
+    reset = 1;
+}
+
+//*********************************************************************
+MAX4822::CmdResult MAX4822::set_relay(RelayChannel r, bool send_data, uint8_t n)
 {
     MAX4822::CmdResult result = OpFailure;
     
-    if(n)
+    if(n <= m_num_devices)
     {
-        m_num_devices = n;
+        m_relay_data[n] |= (1 << (r - 1));
+        
+        if(send_data)
+        {
+            uint16_t num_writes = n + 1;
+            
+            m_cs = 0;
+            while(num_writes--)
+            {
+                m_spi.write(MAX4822::OUTPUT_CNTL_REG);
+                m_spi.write(m_relay_data[num_writes]);
+            }
+            m_cs = 1;
+        }
+        
         result = MAX4822::Success;
     }
     
@@ -58,33 +101,57 @@
 }
 
 //*********************************************************************
-MAX4822::CmdResult MAX4822::set_all_relays(uint8_t n)
+MAX4822::CmdResult MAX4822::reset_relay(RelayChannel r, bool send_data, uint8_t n)
 {
     MAX4822::CmdResult result = OpFailure;
     
+    if(n <= m_num_devices)
+    {
+        m_relay_data[n] &= ~(1 << (r - 1));
+        
+        if(send_data)
+        {
+            uint16_t num_writes = n + 1;
+            
+            m_cs = 0;
+            while(num_writes--)
+            {
+                m_spi.write(MAX4822::OUTPUT_CNTL_REG);
+                m_spi.write(m_relay_data[num_writes]);
+            }
+            m_cs = 1;
+        }
+        
+        result = MAX4822::Success;
+    }
+    
     return result;
 }
 
 //*********************************************************************
-MAX4822::CmdResult MAX4822::reset_all_relays(uint8_t n)
+MAX4822::CmdResult MAX4822::set_pwr_save(PowerSave pwr_save, bool send_data, uint8_t n)
 {
     MAX4822::CmdResult result = OpFailure;
     
+    if(n <= m_num_devices)
+    {
+        m_pwr_save_data[n] = pwr_save;
+        
+        if(send_data)
+        {
+            uint16_t num_writes = n + 1;
+            
+            m_cs = 0;
+            while(num_writes--)
+            {
+                m_spi.write(MAX4822::POWER_SAVE_REG);
+                m_spi.write(m_relay_data[num_writes]);
+            }
+            m_cs = 1;
+        }
+        
+        result = MAX4822::Success;
+    }
+    
     return result;
 }
-
-//*********************************************************************
-MAX4822::CmdResult MAX4822::set_relay(RelayChannel r, uint8_t n)
-{
-    MAX4822::CmdResult result = OpFailure;
-    
-    return result;
-}
-
-//*********************************************************************
-MAX4822::CmdResult MAX4822::reset_relay(RelayChannel r, uint8_t n)
-{
-    MAX4822::CmdResult result = OpFailure;
-    
-    return result;
-}