Fix up linker script; improve startup code; printf to USB.
This commit is contained in:
Damien
parent
d2755ec538
commit
4a175e1f11
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@ -97,7 +97,7 @@ typedef struct _CDC_IF_PROP
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uint16_t (*pIf_Init) (void);
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uint16_t (*pIf_DeInit) (void);
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uint16_t (*pIf_Ctrl) (uint32_t Cmd, uint8_t* Buf, uint32_t Len);
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uint16_t (*pIf_DataTx) (uint8_t* Buf, uint32_t Len);
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uint16_t (*pIf_DataTx) (const uint8_t* Buf, uint32_t Len);
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uint16_t (*pIf_DataRx) (uint8_t* Buf, uint32_t Len);
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}
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CDC_IF_Prop_TypeDef;
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@ -60,7 +60,7 @@ extern uint32_t APP_Rx_ptr_in; /* Increment this pointer or roll it back to
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static uint16_t VCP_Init (void);
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static uint16_t VCP_DeInit (void);
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static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len);
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static uint16_t VCP_DataTx (uint8_t* Buf, uint32_t Len);
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static uint16_t VCP_DataTx (const uint8_t* Buf, uint32_t Len);
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static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len);
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CDC_IF_Prop_TypeDef VCP_fops =
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@ -181,7 +181,7 @@ static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len)
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* @param Len: Number of data to be sent (in bytes)
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* @retval Result of the opeartion: USBD_OK if all operations are OK else VCP_FAIL
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*/
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static uint16_t VCP_DataTx (uint8_t* Buf, uint32_t Len)
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static uint16_t VCP_DataTx (const uint8_t* Buf, uint32_t Len)
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{
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for (int i = 0; i < Len; i++) {
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APP_Rx_Buffer[APP_Rx_ptr_in] = Buf[i];
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@ -212,7 +212,7 @@ static uint16_t VCP_DataTx (uint8_t* Buf, uint32_t Len)
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* @retval Result of the opeartion: USBD_OK if all operations are OK else VCP_FAIL
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*/
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static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len) {
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printf("%.*s", (int)Len, Buf);
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//printf("%.*s", (int)Len, Buf);
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return USBD_OK;
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}
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@ -20,7 +20,4 @@
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#define MSC_MAX_PACKET 64
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#define MSC_MEDIA_PACKET 4096
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// for both?
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#define APP_FOPS VCP_fops
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#endif //__USBD_CONF__H__
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@ -96,7 +96,7 @@ static uint8_t *usbd_pyb_GetCfgDesc (uint8_t speed, uint16_t *length);
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/** @defgroup usbd_cdc_Private_Variables
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* @{
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*/
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extern CDC_IF_Prop_TypeDef APP_FOPS;
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extern CDC_IF_Prop_TypeDef VCP_fops;
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extern uint8_t USBD_DeviceDesc [USB_SIZ_DEVICE_DESC];
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__ALIGN_BEGIN static uint8_t usbd_cdc_AltSet __ALIGN_END = 0;
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@ -322,7 +322,7 @@ static uint8_t usbd_pyb_Init(void *pdev, uint8_t cfgidx) {
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*/
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// Initialize the Interface physical components
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APP_FOPS.pIf_Init();
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VCP_fops.pIf_Init();
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// Prepare Out endpoint to receive next packet */
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DCD_EP_PrepareRx(pdev,
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@ -367,7 +367,7 @@ static uint8_t usbd_pyb_DeInit(void *pdev, uint8_t cfgidx) {
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DCD_EP_Close(pdev, CDC_CMD_EP);
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// Restore default state of the Interface physical components
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APP_FOPS.pIf_DeInit();
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VCP_fops.pIf_DeInit();
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//----------------------------------
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// MSC component
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@ -475,7 +475,7 @@ static uint8_t usbd_pyb_Setup(void *pdev, USB_SETUP_REQ *req) {
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// Device-to-Host request
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// Get the data to be sent to Host from interface layer
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APP_FOPS.pIf_Ctrl(req->bRequest, CmdBuff, req->wLength);
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VCP_fops.pIf_Ctrl(req->bRequest, CmdBuff, req->wLength);
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// Send the data to the host
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return USBD_CtlSendData(pdev, CmdBuff, req->wLength);
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@ -495,7 +495,7 @@ static uint8_t usbd_pyb_Setup(void *pdev, USB_SETUP_REQ *req) {
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// Not a Data request
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// Transfer the command to the interface layer */
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return APP_FOPS.pIf_Ctrl(req->bRequest, NULL, 0);
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return VCP_fops.pIf_Ctrl(req->bRequest, NULL, 0);
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}
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} else if (req->wIndex == 2) {
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@ -537,7 +537,7 @@ static uint8_t usbd_pyb_Setup(void *pdev, USB_SETUP_REQ *req) {
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static uint8_t usbd_pyb_EP0_RxReady(void *pdev) {
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if (cdcCmd != NO_CMD) {
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// Process the data
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APP_FOPS.pIf_Ctrl(cdcCmd, CmdBuff, cdcLen);
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VCP_fops.pIf_Ctrl(cdcCmd, CmdBuff, cdcLen);
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// Reset the command variable to default value
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cdcCmd = NO_CMD;
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@ -612,7 +612,7 @@ static uint8_t usbd_pyb_DataOut(void *pdev, uint8_t epnum) {
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/* USB data will be immediately processed, this allow next USB traffic being
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NAKed till the end of the application Xfer */
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APP_FOPS.pIf_DataRx(USB_Rx_Buffer, USB_Rx_Cnt);
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VCP_fops.pIf_DataRx(USB_Rx_Buffer, USB_Rx_Cnt);
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// Prepare Out endpoint to receive next packet */
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DCD_EP_PrepareRx(pdev,
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142
stm/main.c
142
stm/main.c
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@ -6,7 +6,7 @@
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void delay_ms(int ms);
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void impl02_c_version() {
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static void impl02_c_version() {
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int x = 0;
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while (x < 400) {
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int y = 0;
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@ -52,7 +52,7 @@ void gpio_pin_af(GPIO_TypeDef *gpio, uint32_t pin, uint32_t af) {
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set_bits(&gpio->AFR[pin >> 3], 4 * (pin & 0x07), 0xf, af);
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}
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void mma_init() {
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static void mma_init() {
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RCC->APB1ENR |= RCC_APB1ENR_I2C1EN; // enable I2C1
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gpio_pin_init(GPIOB, 6 /* B6 is SCL */, 2 /* AF mode */, 1 /* open drain output */, 1 /* 25 MHz */, 0 /* no pull up or pull down */);
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gpio_pin_init(GPIOB, 7 /* B7 is SDA */, 2 /* AF mode */, 1 /* open drain output */, 1 /* 25 MHz */, 0 /* no pull up or pull down */);
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@ -82,14 +82,14 @@ void mma_init() {
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// set START bit in CR1 to generate a start cond!
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}
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uint32_t i2c_get_sr() {
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static uint32_t i2c_get_sr() {
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// must read SR1 first, then SR2, as the read can clear some flags
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uint32_t sr1 = I2C1->SR1;
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uint32_t sr2 = I2C1->SR2;
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return (sr2 << 16) | sr1;
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}
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void mma_restart(uint8_t addr, int write) {
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static void mma_restart(uint8_t addr, int write) {
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// send start condition
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I2C1->CR1 |= I2C_CR1_START;
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@ -112,7 +112,7 @@ void mma_restart(uint8_t addr, int write) {
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}
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}
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void mma_start(uint8_t addr, int write) {
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static void mma_start(uint8_t addr, int write) {
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// wait until I2C is not busy
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while (I2C1->SR2 & I2C_SR2_BUSY) {
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}
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@ -121,7 +121,7 @@ void mma_start(uint8_t addr, int write) {
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mma_restart(addr, write);
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}
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void mma_send_byte(uint8_t data) {
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static void mma_send_byte(uint8_t data) {
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// send byte
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I2C1->DR = data;
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// wait for TRA, BUSY, MSL, TXE and BTF (byte transmitted)
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@ -134,7 +134,7 @@ void mma_send_byte(uint8_t data) {
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}
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}
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uint8_t mma_read_ack() {
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static uint8_t mma_read_ack() {
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// enable ACK of received byte
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I2C1->CR1 |= I2C_CR1_ACK;
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// wait for BUSY, MSL and RXNE (byte received)
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@ -145,7 +145,7 @@ uint8_t mma_read_ack() {
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return data;
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}
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uint8_t mma_read_nack() {
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static uint8_t mma_read_nack() {
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// disable ACK of received byte (to indicate end of receiving)
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I2C1->CR1 &= (uint16_t)~((uint16_t)I2C_CR1_ACK);
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// last byte should apparently also generate a stop condition
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@ -158,7 +158,7 @@ uint8_t mma_read_nack() {
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return data;
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}
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void mma_stop() {
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static void mma_stop() {
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// send stop condition
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I2C1->CR1 |= I2C_CR1_STOP;
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}
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@ -440,6 +440,8 @@ py_obj_t pyb_sw() {
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FATFS fatfs0;
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#include "nlr.h"
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/*
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void g(uint i) {
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printf("g:%d\n", i);
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if (i & 1) {
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@ -467,8 +469,13 @@ void f() {
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void nlr_test() {
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f(1);
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}
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*/
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int dummy_bss;
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int main() {
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int dummy;
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// should disable JTAG
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qstr_init();
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@ -486,12 +493,13 @@ int main() {
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for (int i = 0; i < 2; i++) {
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led_state(PYB_LEDR1_PORT_NUM, 1);
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led_state(PYB_LEDR2_PORT_NUM, 0);
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delay_ms(200);
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delay_ms(100);
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led_state(PYB_LEDR1_PORT_NUM, 0);
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led_state(PYB_LEDR2_PORT_NUM, 1);
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delay_ms(200);
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delay_ms(100);
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}
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// turn LEDs off
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led_state(PYB_LEDR1_PORT_NUM, 0);
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led_state(PYB_LEDR2_PORT_NUM, 0);
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led_state(PYB_LEDG1_PORT_NUM, 0);
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@ -508,30 +516,48 @@ int main() {
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}
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*/
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/*
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extern int _sidata;
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extern int _sdata;
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extern int _edata;
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extern int _sbss;
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extern int _ebss;
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delay_ms(2000);
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printf("_sidata=%04x\n", _sidata);
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printf("_sdata=%04x\n", _sdata);
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printf("_edata=%04x\n", _edata);
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printf("_sbss=%04x\n", _sbss);
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printf("_ebss=%04x\n", _ebss);
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//printf("sizeof(int)=%d\n", sizeof(int)); // 4
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delay_ms(2000);
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*/
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// USB
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if (1) {
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void usb_init();
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usb_init();
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}
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for (;;) {
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led_state(PYB_LEDG1_PORT_NUM, 1);
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delay_ms(100);
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led_state(PYB_LEDG1_PORT_NUM, 0);
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extern void *_sidata;
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extern void *_sdata;
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extern void *_edata;
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extern void *_sbss;
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extern void *_ebss;
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extern void *_estack;
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extern void *_etext;
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extern void *_heap_start;
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if (sw_get()) {
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printf("_sidata=%p\n", &_sidata);
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printf("_sdata=%p\n", &_sdata);
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printf("_edata=%p\n", &_edata);
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printf("_sbss=%p\n", &_sbss);
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printf("_ebss=%p\n", &_ebss);
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printf("_estack=%p\n", &_estack);
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printf("_etext=%p\n", &_etext);
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printf("_heap_start=%p\n", &_heap_start);
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printf("&dummy=%p\n", &dummy);
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printf("&dummy_bss=%p\n", &dummy_bss);
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printf("dummy_bss=%x\n", dummy_bss);
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//printf("sizeof(int)=%d\n", sizeof(int)); // 4
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delay_ms(1000);
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}
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delay_ms(500);
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}
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//printf("init;al=%u\n", m_get_total_bytes_allocated()); // 1600, due to qstr_init
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//delay_ms(1000);
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nlr_test();
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#if 1
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// Python!
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if (1) {
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if (0) {
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//const char *pysrc = "def f():\n x=x+1\nprint(42)\n";
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const char *pysrc =
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// impl01.py
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@ -802,12 +828,6 @@ int main() {
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//usb_vcp_init();
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}
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// USB testing
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if (0) {
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void usb_init();
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usb_init();
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}
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int i = 0;
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int n = 0;
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@ -833,55 +853,3 @@ int main() {
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return 0;
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}
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/*
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void testf() {
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testf(1, 2, 3);
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testf(1, 2, 3, 4);
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testf(1, 2, 3, 4, 5);
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testf(1, 2, 3, 4, 5, 6);
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testf(1, 2, 3, 4, 5, 6, 7);
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}
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int testg(int a, int b, int c, int d, int e) {
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return a + b + c + d + testh(e);
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}
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int testh(int x, byte *y) {
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return x + (y[-2] << 2);
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}
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*/
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/*
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void print_int(int x, int y, int z, int zz) {
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printf("I %x %x %x %x", x, y, z, zz);
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byte* ptr = (byte*)z;
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printf("\nP %02x %02x %02x %02x", ptr[-4], ptr[-3], ptr[-2], ptr[-1]);
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for (;;) {
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}
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}
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void print_int_0(int x) { printf("P0 %x", x); }
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void print_int_1(int x) { printf("P1 %x", x); }
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void print_int_2(int x) { printf("P2 %x", x); }
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void print_int_3(int x) { printf("P3 %x", x); }
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void print_int_4(int x) { printf("P4 %x", x); }
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typedef struct _b_t {
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void (*m1)(void*, int);
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void (*m2)(void*, int);
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} b_t;
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typedef struct _a_t {
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b_t *b;
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} a_t;
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void b_m1(b_t*, int);
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void b_m2(b_t*, int);
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void f1(a_t *a) {
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a->b->m1(a->b, 2);
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a->b->m2(a->b, 4);
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b_m1(a->b, 2);
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b_m2(a->b, 4);
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}
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void b_m1(b_t *b, int x) {
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b->m1(b, x);
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}
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*/
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@ -5,7 +5,8 @@ static uint32_t mem = 0;
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void *malloc(size_t n) {
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if (mem == 0) {
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mem = 0x20008000; // need to use big ram block so we can execute code from it; start up a bit in case that's where bss is...?
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extern uint32_t _heap_start;
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mem = &_heap_start; // need to use big ram block so we can execute code from it (is it true that we can't execute from CCM?)
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}
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void *ptr = (void*)mem;
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mem = (mem + n + 3) & (~3);
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16
stm/printf.c
16
stm/printf.c
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@ -209,17 +209,17 @@ int pfenv_printf(pfenv_t *pfenv, const char *fmt, va_list args) {
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}
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void lcd_print_strn(const char *str, unsigned int len);
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void usb_vcp_send(const char* str, int len);
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void xxx(void *data, const char *str, unsigned int len) {
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void stdout_print_strn(void *data, const char *str, unsigned int len) {
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// send stdout to LCD and USB CDC VCP
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lcd_print_strn(str, len);
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usb_vcp_send(str, len);
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}
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pfenv_t pfenv_stdout = {0, xxx};
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pfenv_t pfenv_stdout = {0, stdout_print_strn};
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int printf(const char *fmt, ...) {
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//pfenv_t pfenv;
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//pfenv.data = 0;
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//pfenv.print_strn = xxx;
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va_list args;
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va_start(args, fmt);
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return pfenv_printf(&pfenv_stdout, fmt, args);
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@ -228,15 +228,15 @@ int printf(const char *fmt, ...) {
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// need this because gcc optimises printf("%c", c) -> putchar(c), and printf("a") -> putchar('a')
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int putchar(int c) {
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char chr = c;
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xxx(0, &chr, 1);
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stdout_print_strn(0, &chr, 1);
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return chr;
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}
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// need this because gcc optimises printf("string\n") -> puts("string")
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int puts(const char *s) {
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xxx(0, s, strlen(s));
|
||||
stdout_print_strn(0, s, strlen(s));
|
||||
char chr = '\n';
|
||||
xxx(0, &chr, 1);
|
||||
stdout_print_strn(0, &chr, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -72,6 +72,7 @@ defined in linker script */
|
|||
Reset_Handler:
|
||||
|
||||
/* Copy the data segment initializers from flash to SRAM */
|
||||
/*
|
||||
movs r1, #0
|
||||
b LoopCopyDataInit
|
||||
|
||||
|
|
@ -87,9 +88,23 @@ LoopCopyDataInit:
|
|||
adds r2, r0, r1
|
||||
cmp r2, r3
|
||||
bcc CopyDataInit
|
||||
*/
|
||||
ldr r0, =_sidata @ source pointer
|
||||
ldr r1, =_sdata @ destination pointer
|
||||
ldr r2, =_edata @ maximum destination pointer
|
||||
b data_init_entry
|
||||
data_init_loop:
|
||||
ldr r3, [r0], #4
|
||||
str r3, [r1], #4
|
||||
data_init_entry:
|
||||
cmp r1, r2
|
||||
bcc data_init_loop
|
||||
|
||||
|
||||
/* Zero fill the bss segment. */
|
||||
/*
|
||||
ldr r2, =_sbss
|
||||
b LoopFillZerobss
|
||||
/* Zero fill the bss segment. */
|
||||
FillZerobss:
|
||||
movs r3, #0
|
||||
str r3, [r2], #4
|
||||
|
|
@ -98,6 +113,17 @@ LoopFillZerobss:
|
|||
ldr r3, = _ebss
|
||||
cmp r2, r3
|
||||
bcc FillZerobss
|
||||
*/
|
||||
|
||||
movs r0, #0 @ source value
|
||||
ldr r1, =_sbss @ destination pointer
|
||||
ldr r2, =_ebss @ maximum destination pointer
|
||||
b bss_init_entry
|
||||
bss_init_loop:
|
||||
str r0, [r1], #4
|
||||
bss_init_entry:
|
||||
cmp r1, r2
|
||||
bcc bss_init_loop
|
||||
|
||||
/* Call the clock system intitialization function.*/
|
||||
bl SystemInit
|
||||
|
|
|
|||
|
|
@ -2,27 +2,22 @@
|
|||
GNU linker script for STM32F405
|
||||
*/
|
||||
|
||||
/* Entry Point */
|
||||
ENTRY(Reset_Handler)
|
||||
|
||||
/* Specify the memory areas */
|
||||
MEMORY
|
||||
{
|
||||
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 0x100000 /* 1 MiB */
|
||||
RAM_CCM (xrw) : ORIGIN = 0x10000000, LENGTH = 0x010000 /* 64 KiB */
|
||||
CCMRAM (xrw) : ORIGIN = 0x10000000, LENGTH = 0x010000 /* 64 KiB */
|
||||
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 0x020000 /* 128 KiB */
|
||||
}
|
||||
|
||||
/* define stack size and heap size here */
|
||||
stack_size = 2048;
|
||||
heap_size = 0x4000; /* 16KiB */
|
||||
/* produce a link error if there is not this amount of RAM for these sections */
|
||||
_minimum_stack_size = 2K;
|
||||
_minimum_heap_size = 16K;
|
||||
|
||||
/* define beginning and ending of stack */
|
||||
_stack_start = ORIGIN(RAM) + LENGTH(RAM);
|
||||
_stack_end = _stack_start - stack_size;
|
||||
_estack = _stack_end;
|
||||
|
||||
/* Define output sections */
|
||||
/* top end of the stack */
|
||||
_estack = ORIGIN(RAM) + LENGTH(RAM);
|
||||
|
||||
/* define output sections */
|
||||
SECTIONS
|
||||
{
|
||||
/* The startup code goes first into FLASH */
|
||||
|
|
@ -30,6 +25,7 @@ SECTIONS
|
|||
{
|
||||
. = ALIGN(4);
|
||||
KEEP(*(.isr_vector)) /* Startup code */
|
||||
|
||||
. = ALIGN(4);
|
||||
} >FLASH
|
||||
|
||||
|
|
@ -43,10 +39,13 @@ SECTIONS
|
|||
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
|
||||
/* *(.glue_7) */ /* glue arm to thumb code */
|
||||
/* *(.glue_7t) */ /* glue thumb to arm code */
|
||||
|
||||
. = ALIGN(4);
|
||||
_etext = .; /* define a global symbols at end of code */
|
||||
_etext = .; /* define a global symbol at end of code */
|
||||
_sidata = _etext; /* This is used by the startup in order to initialize the .data secion */
|
||||
} >FLASH
|
||||
|
||||
/*
|
||||
.ARM.extab :
|
||||
{
|
||||
*(.ARM.extab* .gnu.linkonce.armextab.*)
|
||||
|
|
@ -58,51 +57,51 @@ SECTIONS
|
|||
*(.ARM.exidx*)
|
||||
__exidx_end = .;
|
||||
} >FLASH
|
||||
*/
|
||||
|
||||
/* used by the startup to initialize data */
|
||||
_sidata = .;
|
||||
|
||||
/* Initialized data sections goes into RAM, load LMA copy after code */
|
||||
/* This is the initialized data section
|
||||
The program executes knowing that the data is in the RAM
|
||||
but the loader puts the initial values in the FLASH (inidata).
|
||||
It is one task of the startup to copy the initial values from FLASH to RAM. */
|
||||
.data : AT ( _sidata )
|
||||
{
|
||||
. = ALIGN(4);
|
||||
_sdata = .; /* create a global symbol at data start */
|
||||
_sdata = .; /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */
|
||||
*(.data) /* .data sections */
|
||||
*(.data*) /* .data* sections */
|
||||
|
||||
. = ALIGN(4);
|
||||
_edata = .; /* define a global symbol at data end */
|
||||
_edata = .; /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
|
||||
} >RAM
|
||||
|
||||
/* Uninitialized data section */
|
||||
. = ALIGN(4);
|
||||
.bss :
|
||||
{
|
||||
/* Used by the startup in order to initialize the .bss secion */
|
||||
_sbss = .; /* define a global symbol at bss start */
|
||||
__bss_start__ = _sbss;
|
||||
. = ALIGN(4);
|
||||
_sbss = .; /* define a global symbol at bss start; used by startup code */
|
||||
*(.bss)
|
||||
*(.bss*)
|
||||
*(COMMON)
|
||||
|
||||
. = ALIGN(4);
|
||||
_ebss = .; /* define a global symbol at bss end */
|
||||
__bss_end__ = _ebss;
|
||||
_ebss = .; /* define a global symbol at bss end; used by startup code */
|
||||
} >RAM
|
||||
|
||||
. = ALIGN(4);
|
||||
/* this is to define the start of the heap, and make sure we have a minimum size */
|
||||
.heap :
|
||||
{
|
||||
_heap_start = .;
|
||||
. = . + heap_size;
|
||||
} > RAM
|
||||
. = ALIGN(4);
|
||||
_heap_start = .; /* define a global symbol at heap start */
|
||||
. = . + _minimum_heap_size;
|
||||
} >RAM
|
||||
|
||||
. = ALIGN(4);
|
||||
. = _stack_end;
|
||||
/* this just checks there is enough RAM for the stack */
|
||||
.stack :
|
||||
{
|
||||
. = . + stack_size;
|
||||
} > RAM
|
||||
. = ALIGN(4);
|
||||
. = . + _minimum_stack_size;
|
||||
. = ALIGN(4);
|
||||
} >RAM
|
||||
|
||||
/* Remove information from the standard libraries */
|
||||
/*
|
||||
|
|
|
|||
19
stm/usb.c
19
stm/usb.c
|
|
@ -1,21 +1,22 @@
|
|||
#include "usb_core.h"
|
||||
#include "usbd_core.h"
|
||||
#include "usbd_cdc_core.h"
|
||||
#include "usbd_pyb_core.h"
|
||||
#include "usbd_usr.h"
|
||||
#include "usbd_desc.h"
|
||||
|
||||
//extern CDC_IF_Prop_TypeDef APP_FOPS;
|
||||
extern CDC_IF_Prop_TypeDef VCP_fops;
|
||||
|
||||
int is_enabled = 0;
|
||||
USB_OTG_CORE_HANDLE USB_OTG_dev;
|
||||
|
||||
void usb_vcp_init() {
|
||||
//USBD_Init(&USB_OTG_dev, USB_OTG_FS_CORE_ID, &USR_desc, &USBD_CDC_cb, &USR_cb);
|
||||
}
|
||||
|
||||
void usb_vcp_send(const char* str, int len) {
|
||||
//APP_FOPS.pIf_DataTx(str, len);
|
||||
}
|
||||
|
||||
void usb_init() {
|
||||
USBD_Init(&USB_OTG_dev, USB_OTG_FS_CORE_ID, &USR_desc, &USBD_PYB_cb, &USR_cb);
|
||||
is_enabled = 1;
|
||||
}
|
||||
|
||||
void usb_vcp_send(const char* str, int len) {
|
||||
if (is_enabled) {
|
||||
VCP_fops.pIf_DataTx((const uint8_t*)str, len);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue