Kenji Arai
Arduino board run on Mbed-os6.8.1 (only test purpose not official). Need Mbed Studio(1.3.1) not online compiler. If you compile on the online compiler, you can get a hex file but it does NOT work!!!
Dependencies: APDS_9960 LPS22HB LSM9DS1 HTS221
1) DAPLink(LPC11U35)の準備
使用したボード →https://akizukidenshi.com/catalog/g/gK-12144/
プログラムは、nRF52840-MDK用に公開されているDAPLinkのコンパイル済のバイナリコードを使わせていただきました。
https://github.com/makerdiary/nrf52840-mdk/tree/master/firmware/daplink
LPC11U35への書込みは、SW1(ISP)を押したままSW2(RESET)を操作するとPCに「CRP DISABLD」という名称でマウントされるので、書込まれているfirmware.binを削除してから、上記のbinファイルをコピーすれば書き込みが行われます。
書込み完了後にSW1を押さずに起動すれば、「DAPLINK」として認識されます。
DETAILS.TXTでDAPLinkの内容を確認できます。
2) 接続
| Arduino Nano 33 BLE Sense | LPC11U35 Interface CPU | コメント |
| J3:Pin2 (ボード裏のパッド) | CN1:Pin3 P0_7 | SWDIO |
| J3:Pin3 (ボード裏のパッド) | CN1:Pin4 P0_8 | SWCLK |
| JP2:Pin14 GND | CN2:Pin1 GND | GND |
3)USBSerial
シリアル出力は、NANO 33 BLE SENSEボードのUSB端子経由で出力されます。
4)Mbed Studio 1.3.1を使って開発のこと！(オンラインコンパイラでは動作しません!)
5)ボードピン配置
Diff: 3_check_LPS22HB/main3.cpp
- Revision:
- 0:f1a10797d9f6
- Child:
- 1:cce280da16d4
diff -r 000000000000 -r f1a10797d9f6 3_check_LPS22HB/main3.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/3_check_LPS22HB/main3.cpp Fri Feb 07 01:21:16 2020 +0000
@@ -0,0 +1,80 @@
+/*
+ * Mbed Application program
+ * Nano 33 BLE Sense board runs on mbed-OS5
+ * LPS33HB -> MEMS nano pressure sensor:
+ * 260-1260 hPa absolute Digital output barometer
+ * by STMicroelectronics
+ *
+ * Copyright (c) 2020 Kenji Arai / JH1PJL
+ * http://www7b.biglobe.ne.jp/~kenjia/
+ * https://os.mbed.com/users/kenjiArai/
+ * Started: January 22nd, 2020
+ * Revised: Feburary 5th, 2020
+ */
+
+// Pre-selection --------------------------------------------------------------
+#include "select_example.h"
+//#define EXAMPLE_3_CHECK_LPS22HB
+#ifdef EXAMPLE_3_CHECK_LPS22HB
+
+// Include --------------------------------------------------------------------
+#include "mbed.h"
+#include "nano33blesense_iodef.h"
+#include "LPS22HB.h"
+
+// Definition -----------------------------------------------------------------
+
+// Constructor ----------------------------------------------------------------
+RawSerial pc(STDIO_UART_TX, STDIO_UART_RX, 115200);
+DigitalOut sen_pwr(PIN_VDD_ENV, 1);
+DigitalOut i2c_pullup(PIN_I2C_PULLUP, 1);
+I2C i2c(PIN_SDA1, PIN_SCL1);
+LPS22HB *baro = NULL;
+Timer t;
+
+// RAM ------------------------------------------------------------------------
+
+// ROM / Constant data --------------------------------------------------------
+
+// Function prototypes --------------------------------------------------------
+extern void check_i2c_connected_devices(void);
+
+//------------------------------------------------------------------------------
+// Control Program
+//------------------------------------------------------------------------------
+int main()
+{
+ i2c_pullup = 1;
+ sen_pwr = 1;
+ pc.printf("\r\nCheck LSM9DS1\r\n");
+ thread_sleep_for(200);
+ // check I2C line
+ check_i2c_connected_devices();
+ baro = new LPS22HB(i2c, LPS22HB_G_CHIP_ADDR);
+ uint8_t id = baro->read_id();
+ if (id == I_AM_LPS22HB) {
+ pc.printf("LPS22H is ready. ID = 0x%x\r\n", id);
+ } else {
+ pc.printf("LPS22H is NOT ready. return value = 0x%x\r\n", id);
+ }
+ baro->set_odr();
+ uint32_t n = 0;
+ while(true) {
+ t.reset();
+ t.start();
+ baro->get();
+ while (baro->data_ready() == 0){
+ thread_sleep_for(2);
+ }
+ pc.printf("Pressure: %6.1f [hPa], Temperature: %+4.1f [degC], ",
+ baro->pressure(), baro->temperature());
+ ++n;
+ uint32_t passed_time = t.read_ms();
+ pc.printf("processing time: %d [ms], count: %4d\r\n", passed_time, n);
+ if (passed_time < 999){
+ thread_sleep_for(1000 - t.read_ms());
+ }
+ }
+}
+
+#endif // EXAMPLE_3_CHECK_LPS22HB
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