X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fstm%2Fao_serial_stm.c;h=2133c5845e0ca33233332ffc7717ad87ab49b6be;hp=9302bdf813db462c244e095a2b12306d75b589d5;hb=2fa87754c5c11bb86e9b1878580c3d4f4b2463f5;hpb=f560c961ae4fedec0c9f11d5b3635fcb0d67ed8e diff --git a/src/stm/ao_serial_stm.c b/src/stm/ao_serial_stm.c index 9302bdf8..2133c584 100644 --- a/src/stm/ao_serial_stm.c +++ b/src/stm/ao_serial_stm.c @@ -17,23 +17,6 @@ #include -struct ao_stm_usart { - struct ao_fifo rx_fifo; - struct ao_fifo tx_fifo; - struct stm_usart *reg; - uint8_t tx_started; -}; - -#if HAS_SERIAL_1 -struct ao_stm_usart ao_stm_usart1; -#endif -#if HAS_SERIAL_2 -struct ao_stm_usart ao_stm_usart2; -#endif -#if HAS_SERIAL_3 -struct ao_stm_usart ao_stm_usart3; -#endif - void ao_debug_out(char c) { @@ -43,16 +26,8 @@ ao_debug_out(char c) stm_usart1.dr = c; } -#if 0 -void -outbyte(char c) -{ - putchar(c); -} -#endif - static void -ao_usart_tx_start(struct ao_stm_usart *usart) +_ao_usart_tx_start(struct ao_stm_usart *usart) { if (!ao_fifo_empty(usart->tx_fifo) && !usart->tx_started) { @@ -79,90 +54,83 @@ ao_usart_isr(struct ao_stm_usart *usart, int stdin) } if (sr & (1 << STM_USART_SR_TC)) { usart->tx_started = 0; - ao_usart_tx_start(usart); + _ao_usart_tx_start(usart); ao_wakeup(&usart->tx_fifo); } } -#if HAS_SERIAL_1 -void stm_usart1_isr(void) { ao_usart_isr(&ao_stm_usart1, USE_SERIAL_STDIN); } -#endif -#if HAS_SERIAL_2 -void stm_usart2_isr(void) { ao_usart_isr(&ao_stm_usart2, 0); } -#endif -#if HAS_SERIAL_3 -void stm_usart3_isr(void) { ao_usart_isr(&ao_stm_usart3, 0); } -#endif - -char -ao_usart_getchar(struct ao_stm_usart *usart) +int +_ao_usart_pollchar(struct ao_stm_usart *usart) { - char c; - cli(); - while (ao_fifo_empty(usart->rx_fifo)) - ao_sleep(&usart->rx_fifo); - ao_fifo_remove(usart->rx_fifo, c); - sei(); + int c; + + if (ao_fifo_empty(usart->rx_fifo)) + c = AO_READ_AGAIN; + else { + uint8_t u; + ao_fifo_remove(usart->rx_fifo,u); + c = u; + } return c; } char -ao_usart_pollchar(struct ao_stm_usart *usart) +ao_usart_getchar(struct ao_stm_usart *usart) { - char c; - cli(); - if (ao_fifo_empty(usart->rx_fifo)) { - sei(); - return AO_READ_AGAIN; - } - ao_fifo_remove(usart->rx_fifo,c); - sei(); - return c; + int c; + ao_arch_block_interrupts(); + while ((c = _ao_usart_pollchar(usart)) == AO_READ_AGAIN) + ao_sleep(&usart->rx_fifo); + ao_arch_release_interrupts(); + return (char) c; } void ao_usart_putchar(struct ao_stm_usart *usart, char c) { - cli(); + ao_arch_block_interrupts(); while (ao_fifo_full(usart->tx_fifo)) ao_sleep(&usart->tx_fifo); ao_fifo_insert(usart->tx_fifo, c); - ao_usart_tx_start(usart); - sei(); + _ao_usart_tx_start(usart); + ao_arch_release_interrupts(); } void ao_usart_drain(struct ao_stm_usart *usart) { - cli(); + ao_arch_block_interrupts(); while (!ao_fifo_empty(usart->tx_fifo)) ao_sleep(&usart->tx_fifo); - sei(); + ao_arch_release_interrupts(); } static const struct { uint32_t brr; } ao_usart_speeds[] = { [AO_SERIAL_SPEED_4800] = { - STM_APB1 / 4800 + AO_PCLK1 / 4800 }, [AO_SERIAL_SPEED_9600] = { - STM_APB1 / 9600 + AO_PCLK1 / 9600 }, [AO_SERIAL_SPEED_19200] = { - STM_APB1 / 19200 + AO_PCLK1 / 19200 }, [AO_SERIAL_SPEED_57600] = { - STM_APB1 / 57600 + AO_PCLK1 / 57600 + }, + [AO_SERIAL_SPEED_115200] = { + AO_PCLK1 / 115200 }, }; void ao_usart_set_speed(struct ao_stm_usart *usart, uint8_t speed) { - if (speed > AO_SERIAL_SPEED_57600) + if (speed > AO_SERIAL_SPEED_115200) return; - stm_usart1.brr = ao_usart_speeds[speed].brr; + usart->reg->brr = ao_usart_speeds[speed].brr; } void @@ -211,33 +179,135 @@ ao_usart_init(struct ao_stm_usart *usart) ao_usart_set_speed(usart, AO_SERIAL_SPEED_9600); } +#if HAS_SERIAL_1 + +struct ao_stm_usart ao_stm_usart1; + +void stm_usart1_isr(void) { ao_usart_isr(&ao_stm_usart1, USE_SERIAL_1_STDIN); } + +char +ao_serial1_getchar(void) +{ + return ao_usart_getchar(&ao_stm_usart1); +} + +void +ao_serial1_putchar(char c) +{ + ao_usart_putchar(&ao_stm_usart1, c); +} + +int +_ao_serial1_pollchar(void) +{ + return _ao_usart_pollchar(&ao_stm_usart1); +} + +void +ao_serial1_set_speed(uint8_t speed) +{ + ao_usart_set_speed(&ao_stm_usart1, speed); +} +#endif /* HAS_SERIAL_1 */ + +#if HAS_SERIAL_2 + +struct ao_stm_usart ao_stm_usart2; + +void stm_usart2_isr(void) { ao_usart_isr(&ao_stm_usart2, USE_SERIAL_2_STDIN); } + +char +ao_serial2_getchar(void) +{ + return ao_usart_getchar(&ao_stm_usart2); +} + +void +ao_serial2_putchar(char c) +{ + ao_usart_putchar(&ao_stm_usart2, c); +} + +int +_ao_serial2_pollchar(void) +{ + return _ao_usart_pollchar(&ao_stm_usart2); +} + +void +ao_serial2_set_speed(uint8_t speed) +{ + ao_usart_set_speed(&ao_stm_usart2, speed); +} +#endif /* HAS_SERIAL_2 */ + +#if HAS_SERIAL_3 + +struct ao_stm_usart ao_stm_usart3; + +void stm_usart3_isr(void) { ao_usart_isr(&ao_stm_usart3, USE_SERIAL_2_STDIN); } + +char +ao_serial3_getchar(void) +{ + return ao_usart_getchar(&ao_stm_usart3); +} + +void +ao_serial3_putchar(char c) +{ + ao_usart_putchar(&ao_stm_usart3, c); +} + +int +_ao_serial3_pollchar(void) +{ + return _ao_usart_pollchar(&ao_stm_usart3); +} + +void +ao_serial3_set_speed(uint8_t speed) +{ + ao_usart_set_speed(&ao_stm_usart3, speed); +} +#endif /* HAS_SERIAL_3 */ + void ao_serial_init(void) { -#ifdef HAS_SERIAL_1 +#if HAS_SERIAL_1 /* * TX RX * PA9 PA10 - * PB6 PB7 + * PB6 PB7 * */ +#if SERIAL_1_PA9_PA10 stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOAEN); - stm_moder_set(&stm_gpioa, 9, STM_MODER_ALTERNATE); - stm_moder_set(&stm_gpioa, 10, STM_MODER_ALTERNATE); stm_afr_set(&stm_gpioa, 9, STM_AFR_AF7); stm_afr_set(&stm_gpioa, 10, STM_AFR_AF7); - +#else +#if SERIAL_1_PB6_PB7 + stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOBEN); + + stm_afr_set(&stm_gpiob, 6, STM_AFR_AF7); + stm_afr_set(&stm_gpiob, 7, STM_AFR_AF7); +#else +#error "No SERIAL_1 port configuration specified" +#endif +#endif /* Enable USART */ stm_rcc.apb2enr |= (1 << STM_RCC_APB2ENR_USART1EN); ao_stm_usart1.reg = &stm_usart1; + ao_usart_init(&ao_stm_usart1); stm_nvic_set_enable(STM_ISR_USART1_POS); stm_nvic_set_priority(STM_ISR_USART1_POS, 4); -#if USE_SERIAL_STDIN - ao_add_stdio(ao_serial_pollchar, - ao_serial_putchar, +#if USE_SERIAL_1_STDIN + ao_add_stdio(_ao_serial1_pollchar, + ao_serial1_putchar, NULL); #endif #endif @@ -249,20 +319,34 @@ ao_serial_init(void) * PD5 PD6 */ +#if SERIAL_2_PA2_PA3 stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOAEN); - stm_moder_set(&stm_gpioa, 2, STM_MODER_ALTERNATE); - stm_moder_set(&stm_gpioa, 3, STM_MODER_ALTERNATE); stm_afr_set(&stm_gpioa, 2, STM_AFR_AF7); stm_afr_set(&stm_gpioa, 3, STM_AFR_AF7); - +#else +#if SERIAL_2_PD5_PD6 + stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIODEN); + + stm_afr_set(&stm_gpiod, 5, STM_AFR_AF7); + stm_afr_set(&stm_gpiod, 6, STM_AFR_AF7); +#else +#error "No SERIAL_2 port configuration specified" +#endif +#endif /* Enable USART */ stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_USART2EN); ao_stm_usart2.reg = &stm_usart2; + ao_usart_init(&ao_stm_usart2); stm_nvic_set_enable(STM_ISR_USART2_POS); stm_nvic_set_priority(STM_ISR_USART2_POS, 4); +#if USE_SERIAL_2_STDIN + ao_add_stdio(_ao_serial2_pollchar, + ao_serial2_putchar, + NULL); +#endif #endif #if HAS_SERIAL_3 @@ -272,43 +356,42 @@ ao_serial_init(void) * PC10 PC11 * PD8 PD9 */ +#if SERIAL_3_PB10_PB11 stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOBEN); - stm_moder_set(&stm_gpiob, 10, STM_MODER_ALTERNATE); - stm_moder_set(&stm_gpiob, 11, STM_MODER_ALTERNATE); stm_afr_set(&stm_gpiob, 10, STM_AFR_AF7); stm_afr_set(&stm_gpiob, 11, STM_AFR_AF7); - +#else +#if SERIAL_3_PC10_PC11 + stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOCEN); + + stm_afr_set(&stm_gpioc, 10, STM_AFR_AF7); + stm_afr_set(&stm_gpioc, 11, STM_AFR_AF7); +#else +#if SERIAL_3_PD8_PD9 + stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIODEN); + + stm_afr_set(&stm_gpiod, 8, STM_AFR_AF7); + stm_afr_set(&stm_gpiod, 9, STM_AFR_AF7); +#else +#error "No SERIAL_3 port configuration specified" +#endif +#endif +#endif /* Enable USART */ stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_USART3EN); ao_stm_usart3.reg = &stm_usart3; + ao_usart_init(&ao_stm_usart3); stm_nvic_set_enable(STM_ISR_USART3_POS); stm_nvic_set_priority(STM_ISR_USART3_POS, 4); +#if USE_SERIAL_3_STDIN + ao_add_stdio(_ao_serial3_pollchar, + ao_serial3_putchar, + NULL); #endif -} - -#if HAS_SERIAL_1 -char -ao_serial_getchar(void) -{ - return ao_usart_getchar(&ao_stm_usart1); -} - -#if USE_SERIAL_STDIN -char -ao_serial_pollchar(void) -{ - return ao_usart_pollchar(&ao_stm_usart1); -} #endif - -void -ao_serial_putchar(char c) -{ - ao_usart_putchar(&ao_stm_usart1, c); } -#endif /* HAS_SERIAL_1 */