command: Add command_decode_ptr() helper

Add a helper function to convert from a string buffer passed in the
args[] parameter to an actual pointer.  This avoids all the callers
needing to perfrom pointer manipulation.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lcd_st7920.c b/src/lcd_st7920.c
index e4728e74..095870c5 100644
--- a/src/lcd_st7920.c
+++ b/src/lcd_st7920.c
@@ -137,7 +137,7 @@ command_st7920_send_cmds(uint32_t *args)
 {
     struct st7920 *s = oid_lookup(args[0], command_config_st7920);
     st7920_xmit_byte(s, SYNC_CMD);
-    uint8_t len = args[1], *cmds = (void*)(size_t)args[2];
+    uint8_t len = args[1], *cmds = command_decode_ptr(args[2]);
     st7920_xmit(s, len, cmds);
 }
 DECL_COMMAND(command_st7920_send_cmds, "st7920_send_cmds oid=%c cmds=%*s");
@@ -147,7 +147,7 @@ command_st7920_send_data(uint32_t *args)
 {
     struct st7920 *s = oid_lookup(args[0], command_config_st7920);
     st7920_xmit_byte(s, SYNC_DATA);
-    uint8_t len = args[1], *data = (void*)(size_t)args[2];
+    uint8_t len = args[1], *data = command_decode_ptr(args[2]);
     st7920_xmit(s, len, data);
 }
 DECL_COMMAND(command_st7920_send_data, "st7920_send_data oid=%c data=%*s");