C API: added soft register API

2 files changed, 88 insertions, 0 deletions

diff --git a/host/include/uhd/usrp/usrp.h b/host/include/uhd/usrp/usrp.h
index ab9c4d28f..1bde694b4 100644
--- a/host/include/uhd/usrp/usrp.h
+++ b/host/include/uhd/usrp/usrp.h
@@ -36,6 +36,13 @@
 #include <stdint.h>
 #include <time.h>
 
+//! Register info
+typedef struct {
+    size_t bitwidth;
+    bool readable;
+    bool writable;
+} uhd_usrp_register_info_t;
+
 /*
  * Streamers
  */
@@ -1105,6 +1112,39 @@ UHD_API uhd_error uhd_usrp_get_gpio_attr(
     uint32_t *attr_out
 );
 
+//! Enumerate the full paths of USRP registers available for read/write
+UHD_API uhd_error uhd_usrp_enumerate_registers(
+    uhd_usrp_handle h,
+    size_t mboard,
+    uhd_string_vector_handle *registers_out
+);
+
+//! Get more information about a low-level device register
+UHD_API uhd_error uhd_usrp_get_register_info(
+    uhd_usrp_handle h,
+    const char* path,
+    size_t mboard,
+    uhd_usrp_register_info_t *register_info_out
+);
+
+//! Write a low-level register field for a device register in the USRP hardware
+UHD_API uhd_error uhd_usrp_write_register(
+    uhd_usrp_handle h,
+    const char* path,
+    uint32_t field,
+    uint64_t value,
+    size_t mboard
+);
+
+//! Read a low-level register field from a device register in the USRP hardware
+UHD_API uhd_error uhd_usrp_read_register(
+    uhd_usrp_handle h,
+    const char* path,
+    uint32_t field,
+    size_t mboard,
+    uint64_t *value_out
+);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/host/lib/usrp/usrp_c.cpp b/host/lib/usrp/usrp_c.cpp
index 724b907a1..69f2bd5e5 100644
--- a/host/lib/usrp/usrp_c.cpp
+++ b/host/lib/usrp/usrp_c.cpp
@@ -1363,3 +1363,51 @@ uhd_error uhd_usrp_get_gpio_attr(
         *attr_out = USRP(h)->get_gpio_attr(std::string(bank), std::string(attr), mboard);
     )
 }
+
+uhd_error uhd_usrp_enumerate_registers(
+    uhd_usrp_handle h,
+    size_t mboard,
+    uhd_string_vector_handle *registers_out
+){
+    UHD_SAFE_C_SAVE_ERROR(h,
+        (*registers_out)->string_vector_cpp = USRP(h)->enumerate_registers(mboard);
+    )
+}
+
+uhd_error uhd_usrp_get_register_info(
+    uhd_usrp_handle h,
+    const char* path,
+    size_t mboard,
+    uhd_usrp_register_info_t *register_info_out
+){
+    UHD_SAFE_C_SAVE_ERROR(h,
+        uhd::usrp::multi_usrp::register_info_t register_info_cpp = USRP(h)->get_register_info(path, mboard);
+        register_info_out->bitwidth = register_info_cpp.bitwidth;
+        register_info_out->readable = register_info_cpp.readable;
+        register_info_out->writable = register_info_cpp.writable;
+    )
+}
+
+uhd_error uhd_usrp_write_register(
+    uhd_usrp_handle h,
+    const char* path,
+    uint32_t field,
+    uint64_t value,
+    size_t mboard
+){
+    UHD_SAFE_C_SAVE_ERROR(h,
+        USRP(h)->write_register(path, field, value, mboard);
+    )
+}
+
+uhd_error uhd_usrp_write_register(
+    uhd_usrp_handle h,
+    const char* path,
+    uint32_t field,
+    size_t mboard,
+    uint64_t *value_out
+){
+    UHD_SAFE_C_SAVE_ERROR(h,
+        *value_out = USRP(h)->read_register(path, field, mboard);
+    )
+}