CMake: Add acceleration sensor configuration

The DRIVER_ACC configuration variable can be used to select the
acceleration sensor driver to be used.

Author: StarGate01

CMakeLists.txt

@@ -57,6 +57,9 @@ set_property(CACHE TARGET_DEVICE PROPERTY STRINGS PINETIME P8)
 set(LF_CLK "XTAL" CACHE STRING "Low frequency clock source")
 set_property(CACHE LF_CLK PROPERTY STRINGS RC XTAL SYNT)
 
+set(DRIVER_ACC "BMA421" CACHE STRING "Acceleration sensor driver")
+set_property(CACHE DRIVER_ACC PROPERTY STRINGS BMA421 SC7A20)
+
 set(PROJECT_GIT_COMMIT_HASH "")
 
 execute_process(COMMAND git rev-parse --short HEAD
@@ -100,6 +103,7 @@ message("DEVICE CONFIGURATION")
 message("--------------------")
 message("    * Target Pin Mapping : " ${TARGET_DEVICE})
 message("    * LF clock source : " ${LF_CLK})
+message("    * Acceleration sensor : " ${DRIVER_ACC})
 message("")
 
 set(VERSION_EDIT_WARNING "// Do not edit this file, it is automatically generated by CMAKE!")

doc/buildAndProgram.md

@@ -37,6 +37,7 @@ CMake configures the project according to variables you specify the command line
 **BUILD_DFU (\*\*)**|Build DFU files while building (needs [adafruit-nrfutil](https://github.com/adafruit/Adafruit_nRF52_nrfutil)).|`-DBUILD_DFU=1`
 **TARGET_DEVICE**|Target device, used for pin map. Allowed: `PINETIME, P8`|`-DTARGET_DEVICE=PINETIME` (Default)
 **LF_CLK**|Configures the LF clock source. Allowed: `RC, XTAL, SYNT`|`-DLF_CLK=XTAL` (Default)
+**DRIVER_ACC**|Acceleration sensor driver selection. Allowed: `BMA421, SC7A20`|`-DDRIVER_ACC=BMA421` (Default)
 
 ####(**) Note about **CMAKE_BUILD_TYPE**:
 By default, this variable is set to *Release*. It compiles the code with size and speed optimizations. We use this value for all the binaries we publish when we [release](https://github.com/InfiniTimeOrg/InfiniTime/releases) new versions of InfiniTime.

src/CMakeLists.txt

@@ -816,6 +816,8 @@ elseif(LF_CLK STREQUAL "SYNT")
 else()
   message(FATAL_ERROR "Invalid LF_CLK")
 endif()
+add_definitions(-DDRIVER_ACC_${DRIVER_ACC})
+
 # NOTE : Add the following defines to enable debug mode of the NRF SDK:
 #add_definitions(-DDEBUG)
 #add_definitions(-DDEBUG_NRF_USER)

src/main.cpp

@@ -90,8 +90,8 @@ Pinetime::Drivers::Cst816S touchPanel {twiMaster, touchPanelTwiAddress};
 Pinetime::Components::LittleVgl lvgl {lcd, touchPanel};
 
 #if (defined DRIVER_ACC_SC7A20)
-#include <drivers/SC7A20.h>
-  static constexpr uint8_t motionSensorTwiAddress = 0x18;
+  #include <drivers/SC7A20.h>
+static constexpr uint8_t motionSensorTwiAddress = 0x18;
 Pinetime::Drivers::SC7A20 motionSensor {twiMaster, motionSensorTwiAddress};
 #else
 // Assume DRIVER_ACC_BMA421,