Initialize alarm signal when ADC value is greater than 0xF0

inc/afe_configuration.h

@@ -0,0 +1,26 @@
+#ifndef _AFE_CONFIGURATION_
+#define _AFE_CONFIGURATION_
+
+#define ISINK0_CURRENT 4
+#define ISINK1_CURRENT 0
+#define AFE_R1         15
+#define AFE_R2         15
+#define AFE_R3         0
+#define ISINK0_DELAY   2
+#define ISINK1_DELAY   2
+
+void opa0_calib();
+void opa1_calib();
+void opa_config();
+void isink0_on();
+void isink1_on();
+void isink0_off();
+void isink1_off();
+void opa_on();
+void opa_off();
+void isink0_delay();
+void isink1_delay();
+void opa_delay(uint8_t delay);
+void afe_init();
+
+#endif

src/afe_cofiguration.c

@@ -0,0 +1,175 @@
+#include "BA45F5250.h"
+#include "stdint.h"
+#include "build-in.h"
+#include "afe_configuration.h"
+#include "ad_converter.h"
+#include "macro_define.h"
+#include "system_function.h"
+
+void opa0_calib()
+{
+	uint8_t R_TMP0, R_TMP1;
+    R_TMP0 = 0x00;
+    R_TMP1 = 0x00;
+    _sda0vos = 0b11111111;
+    GCC_DELAY(2000);
+    while(_sda0o)
+    {
+        _sda0vos--;
+        GCC_DELAY(2000);
+    }
+    R_TMP0 = _sda0vos & 0b00111111;
+    _sda0vos = 0b11000000;
+    GCC_DELAY(2000);
+    while(!_sda0o)
+    {
+        _sda0vos++;
+        GCC_DELAY(2000);
+    }
+    R_TMP1 = _sda0vos & 0b00111111;
+    _sda0vos = (R_TMP0 + R_TMP1) / 2;
+}
+
+void opa1_calib()
+{
+    uint8_t R_TMP0, R_TMP1;
+    R_TMP0 = 0x00;
+    R_TMP1 = 0x00;
+    _sda1vos = 0b11111111;
+    GCC_DELAY(2000);
+    while(_sda1o)
+    {
+        _sda1vos--;
+        GCC_DELAY(2000);
+    }
+    R_TMP0 = _sda1vos & 0b00111111;
+    _sda1vos = 0b11000000;
+    GCC_DELAY(2000);
+    while(!_sda1o)
+    {
+        _sda1vos++;
+        GCC_DELAY(2000);
+    }
+    R_TMP1 = _sda1vos & 0b00111111;
+    _sda1vos = (R_TMP0 + R_TMP1) / 2;
+}
+
+void opa_config()
+{
+    _isgdata0 = ISINK0_CURRENT;
+    _isgdata1 = ISINK1_CURRENT;
+    _sdpgac0 = AFE_R1;
+    _sdpgac1 = (AFE_R3 << 6) + AFE_R2;
+    _sda0c = 0b01000011;
+    _sda1c = 0b01000011;
+    _sdsw = 0b00100110;
+    opa0_calib();
+    opa1_calib();
+}
+
+void isink0_on()
+{
+    _isgen = 1;
+    _isgs0 = 1;
+    isink0_delay();
+}
+
+void isink1_on()
+{
+    _isgen = 1;
+    _isgs1 = 1;
+    isink1_delay();
+}
+
+void isink0_off()
+{
+    _isgen = 0;
+    _isgs0 = 0;
+}
+
+void isink1_off()
+{
+    _isgen = 0;
+    _isgs1 = 0;
+}
+
+void opa_on()
+{
+    _sds0 = 1;
+    _sda0en = 1;
+    opa_delay(2);
+    _sda1en = 1;
+    opa_delay(2);
+}
+
+void opa_off()
+{
+    _sda0en = 0;
+    _sda1en = 0;
+    _sds0 = 0;
+}
+
+void isink0_delay()
+{
+    uint8_t i;
+    for(i = 0; i < ISINK0_DELAY; i++)
+    {
+        #if _HIRCC_8M
+            GCC_DELAY(93);
+        #elif _HIRCC_4M
+            GCC_DELAY(43);
+        #else
+            GCC_DELAY(18);
+        #endif
+    }
+}
+
+void isink1_delay()
+{
+    uint8_t i;
+    for(i = 0; i < ISINK1_DELAY; i++)
+    {
+        #if _HIRCC_8M
+            GCC_DELAY(93);
+        #elif _HIRCC_4M
+            GCC_DELAY(43);
+        #else
+            GCC_DELAY(18);
+        #endif
+    }
+}
+
+void opa_delay(uint8_t delay)
+{
+    uint8_t i;
+    for(i = 0; i < delay; i++)
+    {
+        #if _HIRCC_8M
+            GCC_DELAY(193);
+        #elif _HIRCC_4M
+            GCC_DELAY(93);
+        #else
+            GCC_DELAY(43);
+        #endif
+    }
+}
+
+void afe_init()
+{
+    opa_on();
+    isink0_on();
+    isink1_on();
+    while(read_adc() >= 0xf0)
+    {
+        GCC_CLRWDT();
+        _pb2 = 1;
+        _pton = 1;
+        delay(200);
+        _pb2 = 0;
+        _pton = 0;
+        delay(200);
+    }
+    isink0_off();
+    isink1_off();
+    opa_off();
+}