int main(void)
{
bl_init();
usart_start();
spi_start();
if (usbd_start()) {
led_blink(LED_ACTIVITY, LED_STATE_RAPID);
for (;;);
}
/* HW initialized */
led_on(LED_ACTIVITY);
bl_dbg("Bootloader started.");
// test_fatfs();
if (usb_connect()) {
led_on(LED_USB);
bl_dbg("USB connected.");
bl_listen();
} else
led_off(LED_USB);
bl_dbg("No USB.");
jump_to_app(APP_LOAD_ADDRESS);
return 0;
}
/**
* @brief Configures and activates the UART peripheral.
*
* @param[in] uartp pointer to the @p UARTDriver object
*
* @notapi
*/
void uart_lld_start(UARTDriver *uartp) {
if (uartp->state == UART_STOP) {
#if STM32_UART_USE_USART1
if (&UARTD1 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART1_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART1_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUSART1(FALSE);
nvicEnableVector(STM32_USART1_NUMBER, STM32_UART_USART1_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART1_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART1_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART2
if (&UARTD2 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART2_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART2_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUSART2(FALSE);
nvicEnableVector(STM32_USART2_NUMBER, STM32_UART_USART2_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART2_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART2_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART3
if (&UARTD3 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART3_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART3_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUSART3(FALSE);
nvicEnableVector(STM32_USART3_NUMBER, STM32_UART_USART3_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART3_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART3_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_UART4
if (&UARTD4 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_UART4_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_UART4_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUART4(FALSE);
nvicEnableVector(STM32_UART4_NUMBER, STM32_UART_UART4_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(UART4_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_UART4_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_UART5
if (&UARTD5 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_UART5_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_UART5_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUART5(FALSE);
nvicEnableVector(STM32_UART5_NUMBER, STM32_UART_UART5_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(UART5_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_UART5_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART6
if (&UARTD6 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART6_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART6_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUSART6(FALSE);
nvicEnableVector(STM32_USART6_NUMBER, STM32_UART_USART6_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART6_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART6_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_UART7
if (&UARTD7 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_UART7_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_UART7_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUART7(FALSE);
nvicEnableVector(STM32_UART7_NUMBER, STM32_UART_UART7_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(UART7_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_UART7_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_UART8
if (&UARTD8 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_UART8_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_UART8_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUART8(FALSE);
nvicEnableVector(STM32_UART8_NUMBER, STM32_UART_UART8_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(UART8_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_UART8_DMA_PRIORITY);
}
#endif
/* Static DMA setup, the transfer size depends on the USART settings,
it is 16 bits if M=1 and PCE=0 else it is 8 bits.*/
if ((uartp->config->cr1 & (USART_CR1_M | USART_CR1_PCE)) == USART_CR1_M)
uartp->dmamode |= STM32_DMA_CR_PSIZE_HWORD | STM32_DMA_CR_MSIZE_HWORD;
dmaStreamSetPeripheral(uartp->dmarx, &uartp->usart->RDR);
dmaStreamSetPeripheral(uartp->dmatx, &uartp->usart->TDR);
uartp->rxbuf = 0;
}
uartp->rxstate = UART_RX_IDLE;
uartp->txstate = UART_TX_IDLE;
usart_start(uartp);
}
/**
* @brief Configures and activates the UART peripheral.
*
* @param[in] uartp pointer to the @p UARTDriver object
*
* @notapi
*/
void uart_lld_start(UARTDriver *uartp) {
uartp->dmamode = STM32_DMA_CR_DMEIE | STM32_DMA_CR_TEIE;
if (uartp->state == UART_STOP) {
#if STM32_UART_USE_USART1
if (&UARTD1 == uartp) {
bool_t b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART1_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #1", "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART1_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #2", "stream already allocated");
rccEnableUSART1(FALSE);
nvicEnableVector(STM32_USART1_NUMBER,
CORTEX_PRIORITY_MASK(STM32_UART_USART1_IRQ_PRIORITY));
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART1_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART1_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART2
if (&UARTD2 == uartp) {
bool_t b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART2_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #3", "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART2_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #4", "stream already allocated");
rccEnableUSART2(FALSE);
nvicEnableVector(STM32_USART2_NUMBER,
CORTEX_PRIORITY_MASK(STM32_UART_USART2_IRQ_PRIORITY));
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART2_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART2_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART3
if (&UARTD3 == uartp) {
bool_t b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART3_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #5", "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART3_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #6", "stream already allocated");
rccEnableUSART3(FALSE);
nvicEnableVector(STM32_USART3_NUMBER,
CORTEX_PRIORITY_MASK(STM32_UART_USART3_IRQ_PRIORITY));
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART3_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART3_DMA_PRIORITY);
}
#endif
/* Static DMA setup, the transfer size depends on the USART settings,
it is 16 bits if M=1 and PCE=0 else it is 8 bits.*/
if ((uartp->config->cr1 & (USART_CR1_M | USART_CR1_PCE)) == USART_CR1_M)
uartp->dmamode |= STM32_DMA_CR_PSIZE_HWORD | STM32_DMA_CR_MSIZE_HWORD;
dmaStreamSetPeripheral(uartp->dmarx, &uartp->usart->RDR);
dmaStreamSetPeripheral(uartp->dmatx, &uartp->usart->TDR);
uartp->rxbuf = 0;
}
uartp->rxstate = UART_RX_IDLE;
uartp->txstate = UART_TX_IDLE;
usart_start(uartp);
}
/**
* @brief Configures and activates the UART peripheral.
*
* @param[in] uartp pointer to the @p UARTDriver object
*
* @notapi
*/
void uart_lld_start(UARTDriver *uartp) {
if (uartp->state == UART_STOP) {
#if STM32_UART_USE_USART1
if (&UARTD1 == uartp) {
bool_t b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART1_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #1", "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART1_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #2", "stream already allocated");
rccEnableUSART1(FALSE);
nvicEnableVector(STM32_USART1_NUMBER,
CORTEX_PRIORITY_MASK(STM32_UART_USART1_IRQ_PRIORITY));
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART1_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART1_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART2
if (&UARTD2 == uartp) {
bool_t b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART2_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #3", "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART2_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #4", "stream already allocated");
rccEnableUSART2(FALSE);
nvicEnableVector(STM32_USART2_NUMBER,
CORTEX_PRIORITY_MASK(STM32_UART_USART2_IRQ_PRIORITY));
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART2_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART2_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART3
if (&UARTD3 == uartp) {
bool_t b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART3_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #5", "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART3_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #6", "stream already allocated");
rccEnableUSART3(FALSE);
nvicEnableVector(STM32_USART3_NUMBER,
CORTEX_PRIORITY_MASK(STM32_UART_USART3_IRQ_PRIORITY));
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART3_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART3_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_UART4
if (&UARTD4 == uartp) {
bool_t b;
chDbgAssert((uartp->config->cr2 & STM32_UART45_CR2_CHECK_MASK) == 0,
"uart_lld_start(), #7",
"specified invalid bits in UART4 CR2 register settings");
chDbgAssert((uartp->config->cr3 & STM32_UART45_CR3_CHECK_MASK) == 0,
"uart_lld_start(), #8",
"specified invalid bits in UART4 CR3 register settings");
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_UART4_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #9", "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_UART4_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #10", "stream already allocated");
rccEnableUART4(FALSE);
nvicEnableVector(STM32_UART4_NUMBER,
CORTEX_PRIORITY_MASK(STM32_UART_UART4_IRQ_PRIORITY));
uartp->dmamode |= STM32_DMA_CR_CHSEL(UART4_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_UART4_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_UART5
if (&UARTD5 == uartp) {
bool_t b;
chDbgAssert((uartp->config->cr2 & STM32_UART45_CR2_CHECK_MASK) == 0,
"uart_lld_start(), #11",
"specified invalid bits in UART5 CR2 register settings");
chDbgAssert((uartp->config->cr3 & STM32_UART45_CR3_CHECK_MASK) == 0,
"uart_lld_start(), #12",
"specified invalid bits in UART5 CR3 register settings");
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_UART5_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #13", "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_UART5_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #14", "stream already allocated");
rccEnableUART5(FALSE);
nvicEnableVector(STM32_UART5_NUMBER,
CORTEX_PRIORITY_MASK(STM32_UART_UART5_IRQ_PRIORITY));
uartp->dmamode |= STM32_DMA_CR_CHSEL(UART5_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_UART5_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART6
if (&UARTD6 == uartp) {
bool_t b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART6_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #15", "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART6_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
chDbgAssert(!b, "uart_lld_start(), #16", "stream already allocated");
rccEnableUSART6(FALSE);
nvicEnableVector(STM32_USART6_NUMBER,
CORTEX_PRIORITY_MASK(STM32_UART_USART6_IRQ_PRIORITY));
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART6_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART6_DMA_PRIORITY);
}
#endif
/* Static DMA setup, the transfer size depends on the USART settings,
it is 16 bits if M=1 and PCE=0 else it is 8 bits.*/
if ((uartp->config->cr1 & (USART_CR1_M | USART_CR1_PCE)) == USART_CR1_M)
uartp->dmamode |= STM32_DMA_CR_PSIZE_HWORD | STM32_DMA_CR_MSIZE_HWORD;
dmaStreamSetPeripheral(uartp->dmarx, &uartp->usart->DR);
dmaStreamSetPeripheral(uartp->dmatx, &uartp->usart->DR);
uartp->rxbuf = 0;
}
uartp->rxstate = UART_RX_IDLE;
uartp->txstate = UART_TX_IDLE;
usart_start(uartp);
}