New parameter to enable the RTCK clock input. (PROBE_FTDI_JTAG_ENABLE…

…_RTCK).
viveris · Jan 29, 2021 · 3fc1bc2 · 3fc1bc2
1 parent 9afcf02
commit 3fc1bc2
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Showing 3 changed files with 54 additions and 3 deletions.
diff --git a/lib_jtag_core/src/config.script b/lib_jtag_core/src/config.script
@@ -42,6 +42,14 @@ set PROBE_FTDI_INTERNAL_FREQ_KHZ 60000
 
 set PROBE_FTDI_TCK_FREQ_KHZ 1000
 
+#
+# To enable the RTCK / adaptative clock mode set the following
+# variable to 1.
+# Warning : Need a FDTI chip supporting this mode (FT2232H,...)
+#
+
+set PROBE_FTDI_JTAG_ENABLE_RTCK 0
+
 #
 # Probe internal mapping
 #
@@ -140,4 +148,3 @@ set PROBE_FTDI_JTAG_TRST_DELAY_MS             200
 
 # ----------------------------------------------------------------------------
 # ----------------------------------------------------------------------------
-
diff --git a/lib_jtag_core/src/config_script.h b/lib_jtag_core/src/config_script.h
@@ -103,6 +103,22 @@ unsigned char config_script[] = {
   0x74, 0x20, 0x50, 0x52, 0x4f, 0x42, 0x45, 0x5f, 0x46, 0x54, 0x44, 0x49,
   0x5f, 0x54, 0x43, 0x4b, 0x5f, 0x46, 0x52, 0x45, 0x51, 0x5f, 0x4b, 0x48,
   0x5a, 0x20, 0x31, 0x30, 0x30, 0x30, 0x0d, 0x0a, 0x0d, 0x0a, 0x23, 0x0d,
+  0x0a, 0x23, 0x20, 0x54, 0x6f, 0x20, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65,
+  0x20, 0x74, 0x68, 0x65, 0x20, 0x52, 0x54, 0x43, 0x4b, 0x20, 0x2f, 0x20,
+  0x61, 0x64, 0x61, 0x70, 0x74, 0x61, 0x74, 0x69, 0x76, 0x65, 0x20, 0x63,
+  0x6c, 0x6f, 0x63, 0x6b, 0x20, 0x6d, 0x6f, 0x64, 0x65, 0x20, 0x73, 0x65,
+  0x74, 0x20, 0x74, 0x68, 0x65, 0x20, 0x66, 0x6f, 0x6c, 0x6c, 0x6f, 0x77,
+  0x69, 0x6e, 0x67, 0x0d, 0x0a, 0x23, 0x20, 0x76, 0x61, 0x72, 0x69, 0x61,
+  0x62, 0x6c, 0x65, 0x20, 0x74, 0x6f, 0x20, 0x31, 0x2e, 0x0d, 0x0a, 0x23,
+  0x20, 0x57, 0x61, 0x72, 0x6e, 0x69, 0x6e, 0x67, 0x20, 0x3a, 0x20, 0x4e,
+  0x65, 0x65, 0x64, 0x20, 0x61, 0x20, 0x46, 0x44, 0x54, 0x49, 0x20, 0x63,
+  0x68, 0x69, 0x70, 0x20, 0x73, 0x75, 0x70, 0x70, 0x6f, 0x72, 0x74, 0x69,
+  0x6e, 0x67, 0x20, 0x74, 0x68, 0x69, 0x73, 0x20, 0x6d, 0x6f, 0x64, 0x65,
+  0x20, 0x28, 0x46, 0x54, 0x32, 0x32, 0x33, 0x32, 0x48, 0x2c, 0x2e, 0x2e,
+  0x2e, 0x29, 0x0d, 0x0a, 0x23, 0x0d, 0x0a, 0x0d, 0x0a, 0x73, 0x65, 0x74,
+  0x20, 0x50, 0x52, 0x4f, 0x42, 0x45, 0x5f, 0x46, 0x54, 0x44, 0x49, 0x5f,
+  0x4a, 0x54, 0x41, 0x47, 0x5f, 0x45, 0x4e, 0x41, 0x42, 0x4c, 0x45, 0x5f,
+  0x52, 0x54, 0x43, 0x4b, 0x20, 0x30, 0x0d, 0x0a, 0x0d, 0x0a, 0x23, 0x0d,
   0x0a, 0x23, 0x20, 0x50, 0x72, 0x6f, 0x62, 0x65, 0x20, 0x69, 0x6e, 0x74,
   0x65, 0x72, 0x6e, 0x61, 0x6c, 0x20, 0x6d, 0x61, 0x70, 0x70, 0x69, 0x6e,
   0x67, 0x0d, 0x0a, 0x23, 0x0d, 0x0a, 0x23, 0x20, 0x4f, 0x6c, 0x69, 0x6d,
@@ -407,6 +423,6 @@ unsigned char config_script[] = {
   0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
   0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
   0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
-  0x2d, 0x0d, 0x0a, 0x0d, 0x0a
+  0x2d, 0x0d, 0x0a
 };
-unsigned int config_script_len = 4901;
+unsigned int config_script_len = 5091;
diff --git a/lib_jtag_core/src/drivers/ftdi_jtag/ftdi_jtag_drv.c b/lib_jtag_core/src/drivers/ftdi_jtag/ftdi_jtag_drv.c
@@ -23,11 +23,14 @@
  * @author Jean-François DEL NERO <[email protected]>
  */
 
+#include <stdint.h>
 #include <stdio.h>
 #include <string.h>
+
 #if !defined(WIN32)
 #include <sys/time.h>
 #endif
+
 #include "../drv_loader.h"
 #include "../../jtag_core_internal.h"
 #include "../../jtag_core.h"
@@ -36,6 +39,8 @@
 
 #include "../../dbg_logs.h"
 
+#include "../../os_interface/os_interface.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -191,6 +196,24 @@ static int ft2232_set_data_bits_high_byte(unsigned char value, unsigned char dir
 	return 0;
 }
 
+static int ft2232h_enable_rtck(int enable)
+{
+	FT_STATUS status;
+	DWORD dw_bytes_written = 0;
+	unsigned char buf;
+	unsigned long bytes_written;
+
+	buf = enable ? 0x96 : 0x97;
+
+	status = pFT_Write(ftdih, &buf, sizeof(buf), &dw_bytes_written);
+	if (status != FT_OK) {
+		bytes_written = dw_bytes_written;
+		return -1;
+	}
+
+	return 0;
+}
+
 int drv_FTDI_Detect(jtag_core * jc)
 {
 	int numDevs,i;
@@ -584,6 +607,11 @@ int drv_FTDI_Init(jtag_core * jc, int sub_drv, char * params)
 		goto loadliberror;
 	}
 
+	if(jtagcore_getEnvVarValue( jc, "PROBE_FTDI_JTAG_ENABLE_RTCK") > 0)
+	{
+		ft2232h_enable_rtck(1);
+	}
+
 	/* Delay... */
 	genos_pause(jtagcore_getEnvVarValue( jc, "PROBE_FTDI_JTAG_TRST_DELAY_MS"));