Implemented Low Level Compunications

2024-10-14 09:19:00 +02:00
parent 7eebf619ae
commit b150a905a3
15 changed files with 645 additions and 60 deletions
--- a/can-interface/components/mcp2521/spi_interface_commands.cpp
+++ b/can-interface/components/mcp2521/spi_interface_commands.cpp
@@ -0,0 +1,49 @@
+#include <string.h>
+
+#include "mcp2521.hpp"
+#include "reg.hpp"
+
+void MCP2521_SPI_Interface::reset() {
+    spi_transaction_ext_t t = {
+        .base = {
+            .flags = SPI_TRANS_VARIABLE_CMD | SPI_TRANS_VARIABLE_ADDR,
+            .cmd = MCP2521_OP_RESET,
+            .addr = 8,
+            .length = 0,
+            .rxlength = 0,
+            .tx_buffer = NULL,
+            .rx_buffer = NULL
+        },
+        .command_bits = 8,
+        .address_bits = 0,
+        .dummy_bits = 0,
+    };
+
+    spi_device_transmit(this->spi_device_handle, (spi_transaction_t*)(&t));
+}
+
+void MCP2521_SPI_Interface::read_reg(uint8_t address, uint8_t *data, size_t length) {
+    spi_transaction_ext_t t = {
+        .base = {
+            .flags = SPI_TRANS_VARIABLE_CMD | SPI_TRANS_VARIABLE_ADDR,
+            .cmd = MCP2521_OP_READ,
+            .addr = address,
+            .length = 8 * length,
+            .rxlength = 8 * length,
+            .tx_buffer = &this->spi_tx_buffer,
+            .rx_buffer = &this->spi_rx_buffer,
+        },
+        .command_bits = 8,
+        .address_bits = 8,
+        .dummy_bits = 0,
+    };
+
+    spi_device_transmit(this->spi_device_handle, (spi_transaction_t*)(&t));
+    memcpy(data, this->spi_rx_buffer, length);
+}
+
+uint8_t MCP2521_SPI_Interface::read_reg(uint8_t address) {
+    uint8_t data;
+    read_reg(address, &data, 1);
+    return data;
+}