SHTC3 app to print id.

2023-06-11 17:15:32 -05:00
parent 1d8134f778
commit 7a0540971e
4 changed files with 70 additions and 0 deletions
--- a/gpio/shtc3/i2c_read_shtc3_app.c
+++ b/gpio/shtc3/i2c_read_shtc3_app.c
@@ -0,0 +1,47 @@
+#include <furi.h>
+#include <furi_hal.h>
+
+uint8_t address = 0x70 << 1;
+uint32_t timeout = 1000;
+FuriHalI2cBusHandle* i2c = &furi_hal_i2c_handle_external;
+
+void wake_up() {
+    uint8_t data_wake_up[2] = {0x35, 0x17};
+    if(furi_hal_i2c_tx(i2c, address, data_wake_up, 2, timeout)) {
+        FURI_LOG_I("I2C", "Wake up success");
+    } else {
+        FURI_LOG_I("I2C", "Wake up failed");
+    }
+}
+
+void read_id() {
+    uint8_t data_read_id[2] = {0xef, 0xc8};
+    uint8_t data_response[3] = {0};
+    if(furi_hal_i2c_trx(i2c, address, data_read_id, 2, data_response, 3, timeout)) {
+        uint16_t value = (data_response[0] << 8) | data_response[1];
+
+        // put binary value into buffer and null terminate
+        char buffer[16];
+        for(uint8_t i = 0; i < 16; i++) {
+            buffer[15 - i] = (value & (1 << i)) ? '1' : '0';
+        }
+        buffer[16] = 0;
+
+        FURI_LOG_I("I2C", "Read ID:     (%s) %04x", buffer, value);
+        FURI_LOG_I("I2C", "Expected ID: (xxxx1xxxxx000111)");
+        FURI_LOG_I("I2C", "CRC 8: %02x", data_response[2]);
+    } else {
+        FURI_LOG_I("I2C", "Read ID failed");
+    }
+}
+
+int32_t i2c_read_shtc3_app(void* p) {
+    UNUSED(p);
+
+    furi_hal_i2c_acquire(&furi_hal_i2c_handle_external);
+    wake_up();
+    read_id();
+    furi_hal_i2c_release(&furi_hal_i2c_handle_external);
+
+    return 0;
+}