i2c_software: Implementation of software i2c (#6141)

Signed-off-by: Alan.Ma from BigTreeTech <tech@biqu3d.com>

1 files changed, 47 insertions, 8 deletions

diff --git a/src/i2ccmds.c b/src/i2ccmds.c
index 69af011b..099fe775 100644
--- a/src/i2ccmds.c
+++ b/src/i2ccmds.c
@@ -9,18 +9,20 @@
 #include "command.h"  //sendf
 #include "sched.h" //DECL_COMMAND
 #include "board/gpio.h" //i2c_write/read/setup
+#include "i2c_software.h" // i2c_software_setup
 #include "i2ccmds.h"
 
+enum {
+    IF_SOFTWARE = 1, IF_HARDWARE = 2
+};
+
 void
 command_config_i2c(uint32_t *args)
 {
-    uint8_t addr = args[3] & 0x7f;
     struct i2cdev_s *i2c = oid_alloc(args[0], command_config_i2c
                                      , sizeof(*i2c));
-    i2c->i2c_config = i2c_setup(args[1], args[2], addr);
 }
-DECL_COMMAND(command_config_i2c,
-             "config_i2c oid=%c i2c_bus=%u rate=%u address=%u");
+DECL_COMMAND(command_config_i2c, "config_i2c oid=%c");
 
 struct i2cdev_s *
 i2cdev_oid_lookup(uint8_t oid)
@@ -29,13 +31,35 @@ i2cdev_oid_lookup(uint8_t oid)
 }
 
 void
+command_i2c_set_bus(uint32_t *args)
+{
+    uint8_t addr = args[3] & 0x7f;
+    struct i2cdev_s *i2c = i2cdev_oid_lookup(args[0]);
+    i2c->i2c_config = i2c_setup(args[1], args[2], addr);
+    i2c->flags |= IF_HARDWARE;
+}
+DECL_COMMAND(command_i2c_set_bus,
+             "i2c_set_bus oid=%c i2c_bus=%u rate=%u address=%u");
+
+void
+i2cdev_set_software_bus(struct i2cdev_s *i2c, struct i2c_software *is)
+{
+    i2c->i2c_software = is;
+    i2c->flags |= IF_SOFTWARE;
+}
+
+void
 command_i2c_write(uint32_t *args)
 {
     uint8_t oid = args[0];
     struct i2cdev_s *i2c = oid_lookup(oid, command_config_i2c);
     uint8_t data_len = args[1];
     uint8_t *data = command_decode_ptr(args[2]);
-    i2c_write(i2c->i2c_config, data_len, data);
+    uint_fast8_t flags = i2c->flags;
+    if (flags & IF_SOFTWARE)
+        i2c_software_write(i2c->i2c_software, data_len, data);
+    else
+        i2c_write(i2c->i2c_config, data_len, data);
 }
 DECL_COMMAND(command_i2c_write, "i2c_write oid=%c data=%*s");
 
@@ -48,7 +72,13 @@ command_i2c_read(uint32_t * args)
     uint8_t *reg = command_decode_ptr(args[2]);
     uint8_t data_len = args[3];
     uint8_t data[data_len];
-    i2c_read(i2c->i2c_config, reg_len, reg, data_len, data);
+    uint_fast8_t flags = i2c->flags;
+    if (flags & IF_SOFTWARE)
+        i2c_software_read(
+            i2c->i2c_software, reg_len, reg, data_len, data);
+    else
+        i2c_read(
+            i2c->i2c_config, reg_len, reg, data_len, data);
     sendf("i2c_read_response oid=%c response=%*s", oid, data_len, data);
 }
 DECL_COMMAND(command_i2c_read, "i2c_read oid=%c reg=%*s read_len=%u");
@@ -66,13 +96,22 @@ command_i2c_modify_bits(uint32_t *args)
     uint8_t data_len = clear_set_len/2;
     uint8_t *clear_set = command_decode_ptr(args[4]);
     uint8_t receive_data[reg_len + data_len];
+    uint_fast8_t flags = i2c->flags;
     memcpy(receive_data, reg, reg_len);
-    i2c_read(i2c->i2c_config, reg_len, reg, data_len, receive_data + reg_len);
+    if (flags & IF_SOFTWARE)
+        i2c_software_read(
+            i2c->i2c_software, reg_len, reg, data_len, receive_data + reg_len);
+    else
+        i2c_read(
+            i2c->i2c_config, reg_len, reg, data_len, receive_data + reg_len);
     for (int i = 0; i < data_len; i++) {
         receive_data[reg_len + i] &= ~clear_set[i];
         receive_data[reg_len + i] |= clear_set[data_len + i];
     }
-    i2c_write(i2c->i2c_config, reg_len + data_len, receive_data);
+    if (flags & IF_SOFTWARE)
+        i2c_software_write(i2c->i2c_software, reg_len + data_len, receive_data);
+    else
+        i2c_write(i2c->i2c_config, reg_len + data_len, receive_data);
 }
 DECL_COMMAND(command_i2c_modify_bits,
              "i2c_modify_bits oid=%c reg=%*s clear_set_bits=%*s");