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12 lines
613 B
C
12 lines
613 B
C
// configure UART
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PORT(UART_PORT, DDR) |= UART_TX_PIN; // output
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PORT(UART_PORT, ODR) |= UART_TX_PIN; // torn off N push-down
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// For open-drain output comment next line
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PORT(UART_PORT, CR1) |= UART_TX_PIN; // push-pull
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// 9 bit, no parity, 1 stop (UART_CR3 = 0 - reset value)
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// 57600 on 16MHz: BRR1=0x11, BRR2=0x06
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UART2_BRR1 = 0x11; UART2_BRR2 = 0x06;
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// UART2_CR1 = UART_CR1_M; // M = 1 -- 9bits
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// for several uarts on line don't write UART_CR2_TEN here, write it when need
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UART2_CR2 = UART_CR2_TEN | UART_CR2_REN | UART_CR2_RIEN; // Allow Tx/RX, generate ints on rx
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