Extract uhk.jumpToModuleBootloader() and use it.

packages/usb/jump-to-module-bootloader.js

@@ -11,5 +11,5 @@ const moduleSlotId = uhk.checkModuleSlot(moduleSlot, uhk.moduleSlotToId);
 const device = uhk.getUhkDevice();
 
 (async function() {
-    await uhk.writeDevice(device, [uhk.usbCommands.jumpToModuleBootloader, moduleSlotId]);
+    await uhk.jumpToModuleBootloader(device, moduleSlotId);
 })();

packages/usb/uhk.js

@@ -200,6 +200,10 @@ async function sendKbootCommandToModule(device, kbootCommandId, i2cAddress) {
     return await uhk.writeDevice(device, [uhk.usbCommands.sendKbootCommandToModule, kbootCommandId, parseInt(i2cAddress)])
 };
 
+async function jumpToModuleBootloader(device, moduleSlotId) {
+    await uhk.writeDevice(device, [uhk.usbCommands.jumpToModuleBootloader, moduleSlotId]);
+};
+
 uhk = exports = module.exports = moduleExports = {
     bufferToString,
     getUint16,
@@ -216,6 +220,7 @@ uhk = exports = module.exports = moduleExports = {
     updateDeviceFirmware,
     reenumerate,
     sendKbootCommandToModule,
+    jumpToModuleBootloader,
     usbCommands: {
         getDeviceProperty       : 0x00,
         reenumerate             : 0x01,

packages/usb/update-module-firmware.js

@@ -11,6 +11,7 @@ program
     .parse(process.argv)
 
 let moduleSlot = program.args[0];
+const moduleSlotId = uhk.checkModuleSlot(moduleSlot, uhk.moduleSlotToId);
 const i2cAddress = uhk.checkModuleSlot(moduleSlot, uhk.moduleSlotToI2cAddress);
 
 const firmwareImage = program.args[1];
@@ -24,8 +25,8 @@ const blhostBuspal = `${blhostUsb} --buspal i2c,${i2cAddress}`;
     config.verbose = true;
     let device = uhk.getUhkDevice();
     await uhk.sendKbootCommandToModule(device, uhk.kbootCommands.ping, i2cAddress);
+    await uhk.jumpToModuleBootloader(device, moduleSlotId);
     device.close();
-    exec(`${usbDir}/jump-to-module-bootloader.js ${moduleSlot}`);
     exec(`${usbDir}/wait-for-kboot-idle.js`);
 
     await uhk.reenumerate('buspal');