Today we started looking at our 2206Q chips. We ca...
# caravelj
Jasper van Woudenberg
09/13/2023, 1:35 AMToday we started looking at our 2206Q chips. We can get the blink example to work, and also see the "Hello world!!" printed on the serial. However, serial receive doesn't seem to work well: we implemented a simple echo. Usually it doesn't echo anything. Sometimes it will echo the character, but will keep on repeating it indefinitely. Any thoughts on fixing this?
Jasper van Woudenberg
09/13/2023, 1:35 AMstatic uint8_t serial_send(uint8_t data) {// Sends one character over the line and returns the status to the caller.while (uart_txfull_read()); // Block until we have spacereg_uart_data = data;return STATUS_OK;}static uint8_t serial_recv(uint8_t* data) {// Receives 1 byte and stores it in the data argument. This function must be blocking.// while (uart_rxempty_read()) {}; // Block until we have a characteruint32_t data32;do {data32 = reg_uart_data;} while (data32 == 0xffffffff);*data = data32 & 0xff; // Load characterreturn STATUS_OK;}Jasper van Woudenberg
09/13/2023, 1:35 AMand in main:
print("Hello RISCAsic!\n");while (1) {uint8_t recvStatus = serial_recv(&cmd);serial_send(cmd);}Jasper van Woudenberg
09/13/2023, 1:36 AMmaybe @Tim Edwards or @Matt Venn know more? thanks in advance!
Jasper van Woudenberg
09/13/2023, 1:41 AMOf course posing the problem is close to solving it. I found this:
#define UART_EV_PEND (*(volatile uint32_t*) 0xf0005810)#define UART_EV_RX 0x2UART_EV_PEND = UART_EV_RX;t
Tim Edwards
09/13/2023, 1:49 AM@Jasper van Woudenberg: Thanks for solving it faster than I could get around to reading the post. : )
m
Matt Venn
09/13/2023, 1:06 PMI found this repo useful in my testing
4 Views