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Got MCP2521 to work

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This commit is contained in:
AlexanderHD27
2024-11-06 22:01:28 +01:00
parent 4bfb1f533e
commit e7a0035041
17 changed files with 525 additions and 70 deletions
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45
can-interface/main/hello_world_main.cpp
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@@ -31,6 +31,21 @@
#define EXTERNAL_TRIGGER GPIO_NUM_26
void onRX(void *arg) {
MCP2521_Command_Interface *mcp2521 = (MCP2521_Command_Interface *)arg;
rx_info info = mcp2521->get_rx_id(MCP2521_RX_BUFFER::RXB0);
uint8_t data[8];
mcp2521->read_rx_buf(MCP2521_RX_BUFFER::RXB0, MCP2521_BUFFER_TYPE::DATA, data, info.length);
printf("RX: (%x) ", info.id);
for (int i = 0; i < info.length; i++) {
printf("%x ", data[i]);
}
printf("\n");
}
extern "C" void app_main() {
printf("Hello world!\n");
@@ -57,24 +72,28 @@ extern "C" void app_main() {
MCP2521_Command_Interface mcp2521(&hardware_mcp2521);
uint8_t data[4] = {0xf0, 0x42, 0x13, 0x37};
gpio_set_level(EXTERNAL_TRIGGER, false);
printf("CANCTRL: %x\n", mcp2521.read_reg(MCP2521_CANCTRL));
printf("RX_STATUS: %x\n", mcp2521.read_rx_status());
printf("STATUS: %x\n", mcp2521.read_status());
mcp2521.reset();
mcp2521.enable_interrupts(true, true, true, true, true, true, true, true);
uint8_t data[16];
hardware_mcp2521.read(MCP2521_OP_READ, data, 16, MCP2521_RXB0CTRL);
mcp2521.register_rx0_handler(onRX, &mcp2521);
mcp2521.register_rx1_handler(onRX, &mcp2521);
mcp2521.set_mode_of_operation(MCP2521_OPERATION_MODE::LOOPBACK, true);
for(int i=0; i<0x10; i++) {
printf("%x ", i);
for(int j=0; j<8; j++) {
printf("%u", (data[i] >> (7-j)) & 1);
}
printf("\n");
}
vTaskDelay(3 / portTICK_PERIOD_MS);
gpio_set_level(EXTERNAL_TRIGGER, true);
mcp2521.prepare_tx(
MCP2521_TX_BUFFER::TXB0, 0x042, data, 4, false, false);
mcp2521.request_to_send(MCP2521_TX_BUFFER::TXB0);
mcp2521.set_tx_id(MCP2521_TX_BUFFER::TXB0, 0x041, false);
mcp2521.request_to_send(MCP2521_TX_BUFFER::TXB0);
vTaskDelay(20 / portTICK_PERIOD_MS);
bool flag = true;
while (true) {