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Merge pull request #857 from devsaurus/dev-spi_cpol

SPI: cpol=high is not implemented due to insufficient hw docs
Johny Mattsson 8 years ago
parent
commit
6d82f8da9d
1 changed files with 4 additions and 0 deletions
  1. 4 0
      app/modules/spi.c

+ 4 - 0
app/modules/spi.c

@@ -33,6 +33,10 @@ static int spi_setup( lua_State *L )
   if (cpol != PLATFORM_SPI_CPOL_LOW && cpol != PLATFORM_SPI_CPOL_HIGH) {
     return luaL_error( L, "wrong arg type" );
   }
+  // CPOL_HIGH is not implemented, see app/driver/spi.c spi_master_init()
+  if (cpol == PLATFORM_SPI_CPOL_HIGH) {
+    return luaL_error( L, "cpol=high is not implemented" );
+  }
 
   if (cpha != PLATFORM_SPI_CPHA_LOW && cpha != PLATFORM_SPI_CPHA_HIGH) {
     return luaL_error( L, "wrong arg type" );