4 files changed, 24 insertions, 6 deletions

diff --git a/example/apps/icssg_pwm/firmware/src/icssg_iep_pwm.h b/example/apps/icssg_pwm/firmware/src/icssg_iep_pwm.h
index 107dd28..6086af9 100644
--- a/example/apps/icssg_pwm/firmware/src/icssg_iep_pwm.h
+++ b/example/apps/icssg_pwm/firmware/src/icssg_iep_pwm.h
@@ -34,6 +34,11 @@
 #ifndef _ICSSG_IEP_PWM_H_
 #define _ICSSG_IEP_PWM_H_ 
 
+/* ICSSG INTC events */
+/* Compile-time Host event for IEP0 CMP0 event, pr0_pru_mst_intr[2]_intr_req,
+   ideally Host would provide this to FW */
+#define TRIGGER_HOST_EVT   ( 18 ) /* 2+16 */
+
 /*
  * Firmware global registers
  */
diff --git a/example/apps/icssg_pwm/firmware/src/iepPwm.c b/example/apps/icssg_pwm/firmware/src/iepPwm.c
index 6bd7cab..3ec8c75 100644
--- a/example/apps/icssg_pwm/firmware/src/iepPwm.c
+++ b/example/apps/icssg_pwm/firmware/src/iepPwm.c
@@ -546,6 +546,7 @@ static Int32 updateIepPwmCmpxShRegDb(
     IcssgIepPwmObj *pIcssgIepPwmObj
 );
 
+volatile register uint32_t __R31;
 
 /* ------------------------------------------------------------------------- *
  * External Functions                                                        *
@@ -780,7 +781,8 @@ void initIepPwmSm(
 
 /* Execute IEP PWM State Machine */
 Int32 execIepPwmSm(
-    IcssgIepPwmObj *pIcssgIepPwmObj
+    IcssgIepPwmObj *pIcssgIepPwmObj, 
+    Bool txHostEvt
 )
 {
     CSL_icss_g_pr1_iep1_slvRegs *pIepHwRegs = pIcssgIepPwmObj->pIepHwRegs;
@@ -791,6 +793,9 @@ Int32 execIepPwmSm(
     if (pIcssgIepPwmObj->iepPwmState == IEP_SM_STATE_INIT) {
         if ((cmpStatus & IEP_CMP_STATUS_CMP0_MASK) == IEP_CMP_STATUS_CMP0_MASK) { /* CMP0 event has occurred */
             pIepHwRegs->CMP_STATUS_REG = IEP_CMP_STATUS_CMP0_12_MASK;   /* clear CMP0-12 events */
+            if (txHostEvt == TRUE) {
+                __R31 = 16 + TRIGGER_HOST_EVT; /* trigger Host interrupt on IEP CMP0 event */
+            }
             
             /* Initialize IEP PWM CMPx Shadow Registers */
             status = initIepPwmCmpxShReg(pIcssgIepPwmObj);
@@ -808,6 +813,9 @@ Int32 execIepPwmSm(
     if (pIcssgIepPwmObj->iepPwmState == IEP_SM_STATE_LHS) {
         if ((cmpStatus & IEP_CMP_STATUS_CMP0_MASK) == IEP_CMP_STATUS_CMP0_MASK) { /* CMP0 event has occurred */
             pIepHwRegs->CMP_STATUS_REG = IEP_CMP_STATUS_CMP0_12_MASK;   /* clear CMP0-12 events */
+            if (txHostEvt == TRUE) {
+                __R31 = 16 + TRIGGER_HOST_EVT; /* trigger Host interrupt on IEP CMP0 event */
+            }
 
             /* Perform LHS processing */
             iepPwmLhs(pIcssgIepPwmObj);
@@ -819,6 +827,9 @@ Int32 execIepPwmSm(
     else if (pIcssgIepPwmObj->iepPwmState == IEP_SM_STATE_RHS) {
         if ((cmpStatus & IEP_CMP_STATUS_CMP0_MASK) == IEP_CMP_STATUS_CMP0_MASK) { /* CMP0 event has occurred */
             pIepHwRegs->CMP_STATUS_REG = IEP_CMP_STATUS_CMP0_12_MASK;   /* clear CMP0-12 events */
+            if (txHostEvt == TRUE) {
+                __R31 = 16 + TRIGGER_HOST_EVT; /* trigger Host interrupt on IEP CMP0 event */
+            }
 
             /* Perform RHS processing */
             iepPwmRhs(pIcssgIepPwmObj);
diff --git a/example/apps/icssg_pwm/firmware/src/iepPwm.h b/example/apps/icssg_pwm/firmware/src/iepPwm.h
index 0ffe6a4..4b9ec5a 100644
--- a/example/apps/icssg_pwm/firmware/src/iepPwm.h
+++ b/example/apps/icssg_pwm/firmware/src/iepPwm.h
@@ -234,7 +234,8 @@ void initIepPwmSm(
 
 /* Execute IEP PWM State Machine */
 Int32 execIepPwmSm(
-    IcssgIepPwmObj *pIcssgIepPwmObj
+    IcssgIepPwmObj *pIcssgIepPwmObj, 
+    Bool txHostEvt
 );
 
 #endif /* _IEP_PWM_H_ */
diff --git a/example/apps/icssg_pwm/firmware/src/main.c b/example/apps/icssg_pwm/firmware/src/main.c
index 9323ff4..6ad1af4 100644
--- a/example/apps/icssg_pwm/firmware/src/main.c
+++ b/example/apps/icssg_pwm/firmware/src/main.c
@@ -34,6 +34,7 @@
 #include "iepPwmFwRegs.h"
 #include "iepPwmHwRegs.h"
 #include "iepPwm.h"
+#include "icssg_iep_pwm.h"
 
 void main(void)
 {
@@ -107,7 +108,7 @@ void main(void)
         while (1)
         {
             gIcssgIep0PwmObj.pIepHwRegs->CMP_STATUS_REG = IEP_CMP_STATUS_CMP1_12_MASK;  /* clear all but CMP0 events */
-            status = execIepPwmSm(&gIcssgIep0PwmObj);
+            status = execIepPwmSm(&gIcssgIep0PwmObj, TRUE);
             if (status != IEP_STS_NERR)
             {
                 /* Indicate Error to Host */
@@ -122,7 +123,7 @@ void main(void)
         while (1)
         {
             gIcssgIep1PwmObj.pIepHwRegs->CMP_STATUS_REG = IEP_CMP_STATUS_CMP1_12_MASK;  /* clear all but CMP0 events */
-            status = execIepPwmSm(&gIcssgIep1PwmObj);
+            status = execIepPwmSm(&gIcssgIep1PwmObj, TRUE);
             if (status != IEP_STS_NERR)
             {
                 /* Indicate Error to Host */
@@ -140,14 +141,14 @@ void main(void)
             gIcssgIep0PwmObj.pIepHwRegs->CMP_STATUS_REG = IEP_CMP_STATUS_CMP1_12_MASK;  /* clear all but CMP0 events */
             gIcssgIep1PwmObj.pIepHwRegs->CMP_STATUS_REG = IEP_CMP_STATUS_CMP1_12_MASK;  /* clear all but CMP0 events */
             
-            status = execIepPwmSm(&gIcssgIep0PwmObj);
+            status = execIepPwmSm(&gIcssgIep0PwmObj, TRUE);
             if (status != IEP_STS_NERR)
             {
                 /* Indicate Error to Host */
                 ;
             }
             
-            status = execIepPwmSm(&gIcssgIep1PwmObj);
+            status = execIepPwmSm(&gIcssgIep1PwmObj, FALSE);
             if (status != IEP_STS_NERR)
             {
                 /* Indicate Error to Host */