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rework serial config

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This commit is contained in:
Sergio R. Caprile
2023-03-07 16:02:02 -03:00
parent 3801e1eade
commit 6920c1159b
2 changed files with 10 additions and 14 deletions
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examples/ti/ek-tm4c1294xl-baremetal/Makefile
+1 -1
View File
@@ -40,7 +40,7 @@ DEVICE_URL ?= https://dash.vcon.io/api/v3/devices/1
update: firmware.bin
curl --fail-with-body -su :$(VCON_API_KEY) $(DEVICE_URL)/ota --data-binary @$<
test update: CFLAGS_EXTRA += -DUART_DEBUG=UART1
test update: CFLAGS_EXTRA += -DUART_DEBUG=UART0
test: update
curl --fail-with-body -su :$(VCON_API_KEY) $(DEVICE_URL)/tx?t=5 | tee /tmp/output.txt
grep 'READY, IP:' /tmp/output.txt # Check for network init
examples/ti/ek-tm4c1294xl-baremetal/hal.h
+9 -13
View File
@@ -133,22 +133,18 @@ static inline void gpio_irq_attach(uint16_t pin) {
#define UARTNO(u) ((uint8_t) (((unsigned int) (u) -UART0_BASE) / UART_OFFSET))
static inline void uart_init(UART0_Type *uart, unsigned long baud) {
struct uarthw {
uint16_t rx, tx; // pins
uint8_t af; // Alternate function
};
// rx, tx, af for UART0,1,2
struct uarthw uarthw[3] = {{PIN('A', 0), PIN('A', 1), 1},
{PIN('B', 0), PIN('B', 1), 1},
{PIN('A', 6), PIN('A', 7), 1}}; // or PD4, PD5...
uint8_t af = 1; // Alternate function
uint16_t rx = 0, tx = 0; // pins
uint8_t uartno = UARTNO(uart);
SYSCTL->RCGCUART |= BIT(uartno); // Enable peripheral clock
gpio_init(uarthw[uartno].tx, GPIO_MODE_AF, GPIO_OTYPE_PUSH_PULL,
GPIO_SPEED_HIGH, 0, uarthw[uartno].af);
gpio_init(uarthw[uartno].rx, GPIO_MODE_AF, GPIO_OTYPE_PUSH_PULL,
GPIO_SPEED_HIGH, 0, uarthw[uartno].af);
if (uart == UART0) tx = PIN('A', 0), rx = PIN('A', 1);
if (uart == UART1) tx = PIN('B', 0), rx = PIN('B', 1);
if (uart == UART2) tx = PIN('A', 6), rx = PIN('A', 7); // or PD4, PD5...
gpio_init(tx, GPIO_MODE_AF, GPIO_OTYPE_PUSH_PULL, GPIO_SPEED_HIGH, 0, af);
gpio_init(rx, GPIO_MODE_AF, GPIO_OTYPE_PUSH_PULL, GPIO_SPEED_HIGH, 0, af);
// (16.3.2) ClkDiv = 16 (HSE=0)
// BRD = BRDI + BRDF = UARTSysClk / (ClkDiv * Baud Rate)
// UARTFBRD[DIVFRAC] = integer(BRDF * 64 + 0.5)